Josef W. Manger

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8725 Arnstein, DT

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Patents Grantslast 30 patents

Information Patent Grant
Membrane for electroacoustic converter systems
- Patent number 4,029,171
- Issue date Jun 14, 1977
- Josef Wilhelm Manger
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Moving voice coil transducer having a flat diaphragm of an impregna...
- Patent number 3,937,905
- Issue date Feb 10, 1976
- Josef W. Manger
- H04 - ELECTRIC COMMUNICATION TECHNIQUE