Alfred Ziegenberg

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Villingen-Schwenningen-Marbach, DE

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Patents Grantslast 30 patents

Information Patent Grant
Permanent magnet system with associated coil arrangement
- Patent number 5,214,710
- Issue date May 25, 1993
- Mercedes-Benz AG
- Alfred Ziegenberg
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Loudspeaker diaphragm provided with a rear load
- Patent number 5,143,169
- Issue date Sep 1, 1992
- Mercedes-Benz AG
- Alfred Ziegenberg
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Loudspeaker
- Patent number 4,868,882
- Issue date Sep 19, 1989
- Daimler-Benz AG
- Alfred Ziegenberg
- H04 - ELECTRIC COMMUNICATION TECHNIQUE