Early slack diaphragm condenser microphone designed by P G A H Voigt
Early slack diaphragm condenser microphone designed by P G A H Voigt, with plug (space type) (Pat. no. 324,152 of 1924-5)
Details
- Category:
- Radio Communication
- Object Number:
- 1933-141
- type:
- microphone
- credit:
- Voigt, P.G.A.H.
