Automatic telephone answering apparatus

Details Automatic telephone answering apparatus Automatic telephone answering apparatus

1974-09-09

1976-03-09

Canney, Vincent P.

179 6R, H04M 164

Patent

active

039432912

ABSTRACT:
A remote-controlled automatic telephone answering apparatus of the type wherein the owner of the apparatus applies a control signal from a remote telephone substation in order to have recorded messages played back to him over the telephone line. If the owner should hang up his receiver during the playback of the messages, a hang-up detector and associated logic circuit detect the resulting disconnection and produce a signal for immediately releasing the line to return it to a non-busy state.

REFERENCES:
patent: 2773123 (1956-12-01), Handschin
patent: 2927964 (1960-03-01), Zimmermann
patent: 3133992 (1964-05-01), Dickman
patent: 3136856 (1964-06-01), Zimmermann
patent: 3557312 (1971-01-01), Vogelman et al.
patent: 3842209 (1974-10-01), Foresta et al.

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