Title:
Acoustic apparatus
United States Patent 3231686


Inventors:
Josef, Hueber Fritz Max
Application Number:
US11719361A
Publication Date:
01/25/1966
Filing Date:
06/14/1961
Assignee:
MAICO ELECTRONICS INC
Primary Class:
Other Classes:
327/318, 381/107, 455/308
International Classes:
H03G7/00; H03G7/06; H04R25/00
View Patent Images:
Foreign References:
GB846735A1960-08-31