Telephone instrument

Recording – communication – or information retrieval equipment – Computer – data processor equipment

Patent

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Details

D1403

Patent

active

D02439611

REFERENCES:
patent: 3413423 (1968-11-01), Stevko
patent: 3515814 (1970-06-01), Morgan
patent: D189580 (1961-01-01), Cannon
patent: D193270 (1962-07-01), Hose
patent: D219222 (1970-11-01), Payne
patent: D225237 (1972-11-01), Lepoix et al.
patent: D227482 (1973-06-01), Binks
patent: D233445 (1974-10-01), Kramer et al.

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