Vogt 1930

Details

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Filed: Sept. 8, 1930
G.B. Patent 372,649
Granted: May 12, 1932

Hans Vogt, Genthinerstrasse 17, Berlin, W. 35, Germany.
"Improvements Relating to the Insulation of Fixed Electrodes of Electrostatic Loudspeakers"

Indirectly Referenced by Walker and Williamson in U.S. Pat. 3,008,014