Telephone

Details Telephone Telephone

1979-07-24

1982-07-06

Ansher, Bernard

Recording, communication, or information retrieval equipment

Computer, data processor equipment

D14 58, D1403

Patent

active

D02653109

REFERENCES:
patent: D211094 (1968-05-01), Laing et al.
patent: D257631 (1980-12-01), Le Cornu
patent: 3480743 (1969-11-01), Engh et al.
patent: 3491221 (1970-01-01), Zamarra
Telephony, Oct. 17, 1977, p. 21, Push Button Telephone.

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