Hearing aid with interchangeable battery compartment and audio c

Details Hearing aid with interchangeable battery compartment and audio c Hearing aid with interchangeable battery compartment and audio c

1988-08-02

1989-12-26

Ng, Jin F.

Electrical audio signal processing systems and devices

Sound effects

Reverberators

381 68, 381 687, H04R 2500

Patent

active

048903302

ABSTRACT:
A hearing aid has a housing to which a standard battery compartment can be removably attached, or to which an audio connection, including a battery compartment, can be optionally removably attached in place of the standard battery compartment. The necessity of an external audio connection, which adds to the size of the hearing aid, is thus eliminated.

REFERENCES:
patent: 2794085 (1957-05-01), Angelis
patent: 4137431 (1979-01-01), Pallesen
patent: 4548082 (1985-10-01), Engebretsen et al.
patent: 4564955 (1986-01-01), Birch et al.
Selectra Brochure, Rexton International.
Advertisement for ITE Horizontal 13 Battery Dorr, 1986 NHAS ASHA Product Prospectus.

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