Credit card telephone

Details Credit card telephone Credit card telephone

1989-09-13

1991-03-19

Fay, Jr., Horace B.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Telephone equipment

Patent

active

D03154858

REFERENCES:
patent: D283890 (1986-05-01), Britz et al.
patent: D300135 (1989-03-01), Alvarez et al.
patent: D302273 (1989-07-01), Adachi et al.
patent: D304814 (1989-08-01), Rose
patent: D305332 (1990-01-01), Schremmer et al.
patent: D306443 (1990-03-01), Lu
patent: D308677 (1990-06-01), Tamura
patent: 4837814 (1989-06-01), Yoshino et al.
Telephony, Jan. 16, 1984, p. 107, Amritsu Magnetic Cord Telephone.

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