Title:
Hearing aid
Document Type and Number:
United States Patent 3170046
Inventors:
Leale, Leslie P.
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Publication Date:
02/16/1965
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Referenced by:
Export Citation:
Assignee:
EARMASTER INC
Primary Class:
Other Classes:
381/322, 381/323
International Classes:
H04R25/00; H04R25/02
US Patent References: