Telephonic communications – Terminal accessory or auxiliary equipment – Including coupler
Patent
1987-11-24
1989-09-05
Ng, Jin F.
Telephonic communications
Terminal accessory or auxiliary equipment
Including coupler
379 52, 379447, 379450, 381153, 381158, 381159, 381161, H04M 120, H04M 1100
Patent
active
048646113
ABSTRACT:
An attachment for a telephone handset used by users of in-the-ear hearing aids including a cup shaped member which acoustically couples the handset to the ear and serves to cancel feedback between the hearing aid receiver and microphone.
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Hallowell Davis, M.D., Hearing & Deafness-A Guide for Laymen, (New York: Murray Hill Books, 1947), pp. 193 and 252.
Hearing Instruments, "Telephone Earpad", Jan. 1985, p. 42.
Hearing Instruments, "Computer Hearing Aids Ad", May 1986, p. 24.
Hearing Instruments, "Telephone Coupler", Jun. 1986, p. 37.
Byrd Danita R.
Ng Jin F.
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