Assistive listening device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 27, 1992
Grant Date -
N/A
app pub date -
Feb 19, 1991
filing date -
Feb 19, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An assistive listening device detachably securable to a temple frame of eyeglasses. A carrier engages the frame and has one or more clips to which the instrument housing attaches. The housing contains a speaker, microphone and amplifier circuitry. The power supply comprises a battery pack accessible through a door in the housing. The device is turned 'on' and 'off' by a closing or opening of the door. A sound conducting tube carries sound from the speaker to the ear of the wearer.
First Claim
Family
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Cited Art Landscape
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