Title:
Spectacle type hearing aid
United States Patent 2613282


Inventors:
Scaife, Alan M.
Application Number:
US11453749A
Publication Date:
10/07/1952
Filing Date:
09/08/1949
Assignee:
Scaife, Alan M.
Primary Class:
Other Classes:
200/52R, 338/67, 351/83, 351/124, 351/158, 381/162, D16/309
International Classes:
G02C11/06; H04R25/00
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US Patent References:
Foreign References:
GB541226A1941-11-18