John R. Brand

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Mt. Prospect, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Filter circuit
- Patent number 3,960,043
- Issue date Jun 1, 1976
- Warwick Electronics Inc.
- John R. Brand
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Electrical musical instrument with automatic sequential tone genera...
- Patent number 3,941,024
- Issue date Mar 2, 1976
- Warwick Electronics, Inc.
- John R. Brand
- G10 - MUSICAL INSTRUMENTS ACOUSTICS