Telephone answering and voice messaging machine

Details Telephone answering and voice messaging machine Telephone answering and voice messaging machine

1993-05-17

1994-08-16

Douglas, Alan P.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Telephone equipment

Patent

active

D03496996

REFERENCES:
patent: D223496 (1972-04-01), Foresta
patent: D291435 (1987-08-01), Kawano et al.
patent: D293780 (1988-01-01), Martinez
patent: D296688 (1988-07-01), Maliskas
patent: D299716 (1989-02-01), Weisz et al.
patent: D303965 (1989-10-01), Helstad
patent: D315895 (1991-04-01), Paine et al.
patent: D332465 (1993-01-01), Johnson et al.
patent: D341130 (1993-11-01), Sherman
patent: 4596901 (1986-06-01), Hanscom et al.

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