Telephone set add-on accessory module

Details Telephone set add-on accessory module Telephone set add-on accessory module

1984-06-11

1987-06-16

Burke, Wallace R.

Recording, communication, or information retrieval equipment

Computer, data processor equipment

D14 62

Patent

active

D02903547

REFERENCES:
patent: D206160 (1966-11-01), Lyster
patent: D258062 (1981-01-01), Cusimano et al.
patent: D272441 (1984-01-01), Carr
patent: D275753 (1984-10-01), Mahan
patent: D276156 (1984-10-01), Goodin et al.
patent: 3916103 (1975-10-01), Morrell et al.
patent: 3928732 (1975-12-01), Simon et al.
patent: 4375584 (1983-03-01), Muzumdar et al.
patent: 4385212 (1983-05-01), Tyler
patent: 4471165 (1984-09-01), DeFino et al.
patent: 4515998 (1985-05-01), Pinede et al.
B. A. Pargh Co. Inc. Cat. .COPYRGT.1983; at p. 35, GTE Speakerphone Model 83221.

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