Justin Kramer

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Los Angeles, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Electrical stop control for musical instruments and action magnet t...
- Patent number 4,851,800
- Issue date Jul 25, 1989
- Richard H. Peterson
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Electrical stop control for musical instruments
- Patent number 4,726,277
- Issue date Feb 23, 1988
- Richard H. Peterson
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Electrical actuator for percussion instruments
- Patent number 4,677,892
- Issue date Jul 7, 1987
- Justin Kramer
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Digital program control clock
- Patent number 4,385,841
- Issue date May 31, 1983
- Justin Kramer
- G04 - HOROLOGY
Information Patent Grant
Electronic wave sharing synthetic sound system
- Patent number 4,290,334
- Issue date Sep 22, 1981
- Justin Kramer
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Music director system
- Patent number 4,205,354
- Issue date May 27, 1980
- Justin Kramer
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Dual speaker
- Patent number 4,174,019
- Issue date Nov 13, 1979
- Justin A. Kramer
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Tape player time signal
- Patent number 4,097,905
- Issue date Jun 27, 1978
- Justin Kramer
- G04 - HOROLOGY