Early slack diaphragm condenser microphone, with p

Early slack diaphragm condenser microphone designed by P G A H

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Early slack diaphragm condenser microphone designed by P G A H
Science Museum Group
© The Board of Trustees of the Science Museum

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.