Telephone hearing aid

Details Telephone hearing aid Telephone hearing aid

1984-09-14

1986-06-24

George, Keith E.

179 81B, H04M 160

Patent

active

045968993

ABSTRACT:
A portable telephone hearing aid having an acousto-acoustic/magnetic amplifier providing a maximum gain of 20 dB has a circular housing at one end of a U-shaped resilient clip member for attaching it to the telephone receiver in a handset. A battery compartment, also housing an ON/OFF switch, and a gain control wheel, is located at the other end of the U-shaped clip.

REFERENCES:
patent: T880003 (1970-11-01), Spahn
patent: 2544027 (1951-03-01), King
patent: 2554834 (1951-05-01), Lavery
patent: 2847506 (1958-08-01), Gray et al.
patent: 3301955 (1967-01-01), Clements, Jr.
patent: 4442318 (1984-04-01), Desrochers

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