Hearing aid apparatus and method
United States Patent 3068954
US Patent References:
/0113031.html
- - 0113031

/0229581.html
- - 0229581

Hearing aid device
- - 2207705

Acoustic device
- - 2312534

Hearing aid
- - 2377739


Inventors:
Strzalkowski, Charles W.
Publication Date:
12/18/1962
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Assignee:
Strzalkowski, Charles W.
Primary Class:
181/135
Other Classes:
381/328, 381/326, 381/327
International Classes:
H04R25/02
US Patent References:
2506116Earring support for hearing aid tubes
2506490Earpiece with plural sound passages
2738850Artificial hearing aid
2739660Hearing aid attachment