Title:
Capacitatively-actuated loud speaker
United States Patent 1631583


Inventors:
John, Depew
Application Number:
US8797426A
Publication Date:
06/07/1927
Filing Date:
02/12/1926
Assignee:
Ignatz, Lauter
Primary Class:
Other Classes:
455/343.1
International Classes:
H04R19/00
View Patent Images: