Title:
Method of producing fitted hearing aid with sound amplifier incorporated therein
United States Patent 3345737
Publication Date:
10/10/1967
Assignee:
OTOACUSTICA ELECTRONICS LTD
Other Classes:
29/423, 29/428, 29/527.1, 264/222, 381/312, 381/328
International Classes:
B29C39/00; H04R25/00