Telephone key

Details Telephone key Telephone key

1978-08-24

1982-08-17

Ansher, Bernard

Recording, communication, or information retrieval equipment

Computer, data processor equipment

D14 66, D14115, D1403

Patent

active

D02658240

REFERENCES:
patent: D223252 (1972-04-01), Jacobson
patent: D225858 (1973-01-01), Kline
patent: D249511 (1978-09-01), Olson
patent: 3725907 (1973-04-01), Boulanger
patent: 3797630 (1974-03-01), Zilkha
patent: 4061888 (1977-12-01), Rasmussen
patent: 4081629 (1978-03-01), Benesh et al.

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