Emergency telephone dialing pad

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

Patent

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Details

D10104, D10106

Patent

active

D02739526

REFERENCES:
patent: D250533 (1978-12-01), Renard
patent: D253525 (1979-11-01), Wilson
patent: D261118 (1981-10-01), Perhacs, Jr.
patent: D263707 (1982-04-01), Fukushima et al.
patent: D265648 (1982-08-01), Fukushima et al.
patent: 4120039 (1978-10-01), Fischer
Symbol Source Book, Henry Dreyfuss, .RTM.1972, McGraw-Hill Book Co., p. 130, No Fires Symbol and p. 117, Clinic Symbol.

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