Telephone

Details Telephone Telephone

1991-03-04

1993-10-05

Douglas, Alan P.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Telephone equipment

D14143

Patent

active

D03400514

REFERENCES:
patent: D248234 (1978-06-01), Genaro et al.
patent: D255238 (1980-06-01), Thomas
patent: D264714 (1982-06-01), Tyree
patent: D273677 (1984-05-01), Martinsen
patent: D282464 (1986-02-01), Rivette et al.
patent: D282736 (1986-02-01), Brown
patent: D294697 (1988-03-01), Burkett et al.
patent: D300826 (1989-04-01), Ng
patent: D323829 (1992-02-01), Martinsen

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