musicpickups.com

The musical instrument pickups, effects units and amplifiers designed and manufactured
by Harry DeArmond and Bud Rowe and later by Steve Tosh in Toledo, Ohio, from the 1940s to the 1980s, through Rowe Industries Inc.,
H. N. Rowe & Company, Rowe DeArmond Inc., DeArmond Inc. and Tosh Electronics, all of Toledo, Ohio, USA.

Patents

 
  Harry DeArmond and Bud Rowe were each granted several Patents by The U.S. Government.  Some of the Company's employees were also named on several Patents.

Details of these Patents are listed in this brief synopsis.  The complete Patent is shown below.  Patents are listed in 'Date of Grant' order.

NOTE: Reproduction of the Patents below is by kind permission of the United States Patent and Trademark Office.


Patent application filed September 1, 1934 by H. N. Rowe for Electrodynamic Speaker Unit, granted December 24, 1935, No. 2,025,127


Patent application filed March 20, 1946 by Harry DeArmond for Guitar Magnetic Microphone, granted November 30, 1948, No. 2,455,046

The drawings included with this Patent show a single-slot version of the archtop attachable pickup Model FHC with one slot.  This is the Patent Number stamped on the cover of the Model FHC-C pickup


Patent application filed October 11, 1946 by H. N. Rowe for Switch Volume Control, granted january 27, 1948, No. Des. 148,485

The drawings included with this Patent show the Model 600 volume control pedal.  This Patent Number was shown on the nameplate of Models 600 and 800, Trem-Trol


Patent application filed November 14, 1946 by Harry DeArmond for Microphone Pickup and Volume Control, granted December 7, 1958, No. 2,455,567

The drawings included with this Patent show the Model 500 attachable mandolin pickup, the first version with the split black front panel.


Patent application filed November 18, 1946 by Harry DeArmond for Microphone Pickup and Volume Control, granted October 25, 1949, No. 2,485,263

The drawings included with this Patent show the Model RHC-B attachable pickup, but with 6 poles visible, whereas the version ultimately marketed had the pole-piece under the 'B' string is recessed.


Patent application filed September 27, 1947 by Harry DeArmond for Violin Microphone, granted October 25, 1949, No. 2,486,264

The drawings included with this Patent show the Models 700 and 900 attachable pickups


Patent application filed May 23, 1950 by R.E. Dearth for an Automatic Auxiliary Tuning Device, granted July 15, 1952, No. 2,603,119

The drawings included with this Patent show the bridge-mounted tuning adjuster unit marketed by DeArmond as the Stringtone Tuning Changer


Patent application filed May 10, 1950 by Harry DeArmond for Individual Magnet Adjustable Pickup, granted September 30, 1952, No. 2,612,072

The drawings included with this Patent show the Model 2000 pickup


Patent application filed September 30, 1950 by Harry DeArmond for Individual Magnet Adjustable Pickup, granted September 30, 1952, No. 2,612,541

The drawings included with this Patent show a guitar pickup with individually
adjustable poles with bonded threads, similar to the Model 210


Patent application filed November 9, 1956 by Harry DeArmond et al for Electrical Pickups for Musical Instruments, granted September 30, 1952, No. 2,909,092

The drawings included with this Patent show a recessed version of the Model 210 pickup.  The other person (et al) referred to is Leonard Meeker, an employee of the Company.


Patent application filed January 25, 1956 by Harry DeArmond for Musical Instrument, granted January 12, 1960, No. 2,920,522

The drawings included with this Patent show an electric piano with one string.



Patent application filed September 29, 1958 by Harry DeArmond et al, for Foot Pedal, granted June 6, 1961, No. 2,986,953

The drawings included with this Patent show the Model 610 combined Volume and Tone Control Pedal



Patent application filed May 15, 1962 by H. N. Rowe for Antenna Support Fixture with Quick Release Feature to Enable Lowering and Raising, granted September 28, 1965, No. 3,208,702

The drawings included with this Patent show a radio aerial.  This would have been related to the company's other electronic activities


Patent application filed July 11, 1962 by H. N. Rowe for Electronic Tremolo Unit, granted March 15, 1966, No. 3,240,859

The drawings included with this Patent show an electronic tremolo unit built into a Harmony Model H-66 Vibra-Jet guitar


Patent application filed October 15, 1968 by R. L. Abair for Magnetic Pick Unit for Musical Instruments, granted November 17, 1970, No. 3,541,219

The drawings included with this Patent show a pickup somewhat similar to the Coronado guitar pickup.  The R. L. Abair referred to is Ray Abair, an employee of the company.


Patent application filed March 20, 1974 by Horace N. Rowe for Pickup Mount for Stringed Musical Instrument, granted March 11, 1975, No. 3,869,952

The drawings included with this Patent show the Model 220 attachable humbucking pickup
for a flat-top roundhole guitar


Patent application filed February 8, 1975 by Horace N. Rowe for Foot Pedal for Control of Musical Instrument and the like, granted July 15, 1975, No. 3,894,445

The drawings included with this Patent show a foot-pedal which did not go into production


Patent application filed October 14, 1975 by Horace N. Rowe for Vibration Pickup Unit for Sensing Vibrations of Musical Instruments and the like, granted December 6, 1977, No. 4,061,934

The drawings included with this Patent show a Piezo attachable pickup head such as those used with pickups Models 3000, 3010 and 3200.



Patents:

Patent application filed September 1, 1934 by H. N. Rowe for Electrodynamic Speaker Unit, granted December 24, 1935, No. 2,025,127








Patent application filed March 20, 1946 by Harry DeArmond for Guitar Magnetic Microphone, granted November 30, 1948, No. 2,455,046

    The drawings included with this Patent show a single-slot version of the archtop attachable pickup Model FHC.  This is the Patent Number stamped on the cover of the Model FHC-C pickup













Patent application filed October 11, 1946 by H. N. Rowe for Switch Volume Control, granted january 27, 1948, No. Des. 148,485

 



Patent application filed November 14, 1946 by Harry DeArmond for Microphone Pickup and Volume Control, granted December 7, 1948, No. 2,455,567

    The drawings included with this Patent show the Model 500 attachable mandolin pickup, the first version with the split black front panel









Patent application filed November 18, 1946 by Harry DeArmond for Microphone Pickup and Volume Control, granted October 25, 1949, No. 2,485,263

    The drawings included with this Patent show the Model RHC-B attachable pickup, but with 6 poles visible, whereas the version ultimately marketed showed 5 poles.









Patent application filed September 27, 1947 by Harry DeArmond for Violin Microphone, granted October 25, 1949, No. 2,486,264

    The drawings included with this Patent show the Models 700 and 900 attachable pickups












Patent application filed May 23, 1950 by R.E. Dearth for an Automatic Auxiliary Tuning Device, granted July 15, 1952, No. 2,603,119

    The drawings included with this Patent show the bridge-mounted tuning adjuster unit marketed by DeArmond as the Stringtone Tuning Changer

Mr. Dearth was not an employee of DeArmond.










Patent application filed May 10, 1950 by Harry DeArmond for Individual Magnet Adjustable Pickup, granted September 30, 1952, No. 2,612,072

    The drawings included with this Patent show the Model 2000 pickup









Patent application filed September 30, 1950 by Harry DeArmond for Individual Magnet Adjustable Pickup, granted September 30, 1952, No. 2,612,541

    The drawings included with this Patent show a guitar pickup with individually
adjustable poles with bonded threads, similar to the Model 210











Patent application filed November 9, 1956 by Harry DeArmond et al for Electrical Pickups for Musical Instruments, granted September 30, 1952, No. 2,909,092

    The drawings included with this Patent show a recessed version of the Model 210 pickup.  The other person (et al) referred to is Leonard Meeker, an employee of the Company.









Patent application filed January 25, 1956 by Harry DeArmond for Musical Instrument, granted January 12, 1960, No. 2,920,522

    The drawings included with this Patent show an electric piano with one string.
















Patent application filed September 29, 1958 by Harry DeArmond et al, for Foot Pedal, granted June 6, 1961, No. 2,986,953

    The drawings included with this Patent show the Model 610 combined Volume and Tone Control Pedal


















Patent application filed May 15, 1962 by H. N. Rowe for Antenna Support Fixture with Quick Release Feature to Enable Lowering and Raising, granted September 28, 1965, No. 3,208,702

    The drawings included with this Patent show a radio aerial.  This would have been related to the company's other electronic activities.  Bud Rowe was a keen sailor and Commodore of a local Yacht Club.

















Patent application filed July 11, 1962 by H. N. Rowe for Electronic Tremolo Unit, granted March 15, 1966, No. 3,240,859

    The drawings included with this Patent show an electronic tremolo unit built into a Harmony Model H-66 Vibra-Jet guitar













Patent application filed October 15, 1968 by R. L. Abair for Magnetic Pick Unit for Musical Instruments, granted November 17, 1970, No. 3,541,219

    The drawings included with this Patent show a pickup somewhat similar to the Coronado guitar pickup.  The R. L. Abair referred to is Ray Abair, an employee of the company.














Patent application filed March 20, 1974 by Horace N. Rowe for Pickup Mount for Stringed Musical Instrument, granted March 11, 1975, No. 3,869,952

    The drawings included with this Patent show the Model 220 attachable humbucking pickup
for a flat-top roundhole guitar

















Patent application filed February 8, 1975 by Horace N. Rowe for Foot Pedal for Control of Musical Instrument and the like, granted July 15, 1975, No. 3,894,445

    The drawings included with this Patent show a foot-pedal which did not go into production
















Patent application filed October 14, 1975 by Horace N. Rowe for Vibration Pickup Unit for Sensing Vibrations of Musical Instruments and the like, granted December 6, 1977, No. 4,061,934

    The drawings included with this Patent show a Piezo attachable pickup head such as those used with pickups Models 3000, 3010 and 3200.