Electric impulse transmitters for telephone instruments

Details Electric impulse transmitters for telephone instruments Electric impulse transmitters for telephone instruments

1974-10-25

1976-01-13

Claffy, Kathleen H.

179 84A, 179 90K, H04M 150

Patent

active

039327078

ABSTRACT:
An electric circuit in an electric impulse transmitter which is responsive to the cessation of line current, except during loop-break impulses, to provide a clearing signal for storage circuits of said impulse transmitter.

REFERENCES:
patent: 3601552 (1971-08-01), Ware et al.
patent: 3609249 (1971-09-01), Anede
patent: 3686444 (1972-08-01), Stevenson
patent: 3686445 (1972-08-01), Barnaby et al.

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