Wilford R. Schreier

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Bensenville, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Envelope generating circuit for an electronic musical instrument
- Patent number 4,320,682
- Issue date Mar 23, 1982
- Marmon Company
- Wilford R. Schreier
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Electronic musical instrument including improved vibrato
- Patent number 4,304,162
- Issue date Dec 8, 1981
- Marmon Company
- Wilford R. Schreier
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Harmony generating circuit for a musical instrument
- Patent number 4,300,433
- Issue date Nov 17, 1981
- Marmon Company
- Wilford R. Schreier
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
One key chording system for an electronic keyboard instrument
- Patent number 4,000,674
- Issue date Jan 4, 1977
- Hammond Corporation
- Wilford Rayburn Schreier
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Delayed vibrato and burble circuit
- Patent number 3,973,463
- Issue date Aug 10, 1976
- Hammond Corporation
- Wilford R. Schreier
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Plural mode envelope generator for voltage controlled amplifier
- Patent number 3,971,284
- Issue date Jul 27, 1976
- Hammond Corporation
- Wilford R. Schreier
- G10 - MUSICAL INSTRUMENTS ACOUSTICS