Jean Pierre Mamin

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La Tour de Peilz, CH

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Patents Grantslast 30 patents

Information Patent Grant
Loudspeaker with passive low frequency directional control
- Patent number 8,428,284
- Issue date Apr 23, 2013
- Meyer Sound Laboratories, Incorporated
- John D. Meyer
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
LOUDSPEAKER WITH PASSIVE LOW FREQUENCY DIRECTIONAL CONTROL
- Publication number 20100254558
- Publication date Oct 7, 2010
- John D. Meyer
- H04 - ELECTRIC COMMUNICATION TECHNIQUE