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O/R Inc.
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Walnut Creek, CA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Synthesizer organ or similar article
Patent number
D258068
Issue date
Jan 27, 1981
O/R, Inc.
David E. Ostrom
D17 - Musical instruments
Information
Patent Grant
Electronic musical instrument
Patent number
4,203,340
Issue date
May 20, 1980
O/R Inc.
David E. Ostrom
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Patents Applications
last 30 patents
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