Donald J. Leslie

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Altadena, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Universal pulsato unit
- Patent number 4,253,368
- Issue date Mar 3, 1981
- Marmon Company
- Donald J. Leslie
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Rotor drive for pulsato apparatus
- Patent number 4,198,880
- Issue date Apr 22, 1980
- Donald J. Leslie
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Selective high frequency compression device for speaker system
- Patent number 4,084,474
- Issue date Apr 18, 1978
- Donald James Leslie
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Planetary acoustic phase shift mechanism
- Patent number 4,017,685
- Issue date Apr 12, 1977
- Donald J. Leslie
- G10 - MUSICAL INSTRUMENTS ACOUSTICS