Telephone network interface apparatus

Details Telephone network interface apparatus Telephone network interface apparatus

1988-04-29

1991-01-15

Fay, Jr., Horace B.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Element or attachment

Patent

active

D03138038

REFERENCES:
patent: D235108 (1975-05-01), De Luca
patent: D247897 (1978-05-01), De Luca
patent: D287963 (1987-01-01), Fasano et al.
patent: D289036 (1987-03-01), Wallgren
patent: D299492 (1989-01-01), Gregson
patent: D308061 (1990-05-01), De Luca
patent: 4658418 (1987-04-01), Rodgers
patent: 4694488 (1987-09-01), Mickelon et al.
patent: 4712232 (1987-12-01), Rodgers
patent: 4737985 (1988-04-01), De Luca et al.
patent: 4875232 (1989-10-01), Shumway

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