Title:
Speaker assembly
United States Patent 2872516
US Patent References:
Sound reproducing device
- - 2297972

Loud-speaker structure
- - 2602860


Inventors:
Hoffman, James D.
Publication Date:
02/03/1959
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Assignee:
Hoffman, James D.
Primary Class:
381/89
Other Classes:
181/144
International Classes:
H04R1/28