Loud speaker construction
United States Patent 3284581

Inventors:
Fender, Clarence L.
Publication Date:
11/08/1966
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Assignee:
COLUMBIA BROADCASTING SYST INC
Primary Class:
381/407
Other Classes:
381/396, 381/432
International Classes:
H04R9/04; H04R9/00
Foreign References:
GB415444A