Fire alert telephone

Details Fire alert telephone Fire alert telephone

1994-12-15

1997-04-08

Asch, Jeffrey

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Telephone equipment

D10106, D14144

Patent

active

D03787532

REFERENCES:
patent: D219030 (1970-10-01), Payne
patent: D256582 (1980-08-01), Owens
patent: D264078 (1982-04-01), Fukushima et al.
patent: D273107 (1984-03-01), Breger
patent: D289159 (1987-04-01), Albertson
patent: D290604 (1987-06-01), Offredi
patent: D303526 (1989-09-01), Gordon
patent: D304587 (1989-11-01), Danielson et al.
patent: D313411 (1991-01-01), Weiser et al.
patent: D319826 (1991-09-01), Hung
patent: D335877 (1993-05-01), Watanabe et al.
patent: 3865985 (1975-02-01), Stankus

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