Early slack diaphragm condenser microphone, with p
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Early slack diaphragm condenser microphone designed by P G A H Voigt, with plug (wall type) (pat. No. 263,300 of 1924-5)
Details
- Category:
- Radio Communication
- Object Number:
- 1933-140
- type:
- microphone
- credit:
- Voigt, P.G.A.H.
