Friedrich Richter

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Klosterneuburg, AT

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Patents Grantslast 30 patents

Information Patent Grant
Ear piece construction
- Patent number 4,572,324
- Issue date Feb 25, 1986
- AKG Akustische u. Kino-Gerate Gesellschaft m.b.H.
- Werner Fidi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE