GB589918A
Expired / Lapsed
GB
⏱️ 0.0 years remaining
Improvements in telephone relaying and amplifying means for the aid of deaf or like persons
Assignee: Individual
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Filing: 1944-11-28
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Granted: —
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Expires: 1964-11-28
Abstract
Abstract 589,918. Sub-station features. HORVITCH, G. M. Nov. 28, 1944, No. 23748. [Class 40 (iv)] A telephone relay, consisting of a magnet 1 and a coil 2 in a non-magnetic casing 9, is secured to the earpiece of a telephone by a rubber band 9a. The coil winding terminals 7, 8 are connected to a high-gain hearing aid or other amplifier (not shown), thus enabling an ordinary telephone to be used by a deaf person without dismantling it or interfering with its wiring. Figs. 2 and 3 (not shown) illustrate embodiments using inductive and microphonic or piezo-electric pick-ups for the same purpose.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
GB
Data Source
google_patents
Last Synchronized
2026-10-22 22:06
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/21; H04M1/215
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