Hands-free intercommunication instrument

Details Hands-free intercommunication instrument Hands-free intercommunication instrument

1988-08-16

1989-12-19

Fay, Jr., Horace B.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Intercom

D14141, D14240

Patent

active

D03051218

REFERENCES:
patent: D243536 (1977-03-01), van de Poel
patent: D256689 (1980-09-01), McCain
patent: D272341 (1984-01-01), Martinez
patent: D284368 (1986-06-01), Stansbury, Jr.
patent: D285681 (1986-09-01), Nakshima
patent: D290837 (1987-07-01), Martinez
patent: D296688 (1988-07-01), Maliskas
patent: D298532 (1988-11-01), Richardson et al.
patent: 4596901 (1986-06-01), Hanscom et al.
B. A. Pargh, Co., Inc., Catalog 1989 Spring/Summer 1989; "Corba", AN8532CBR, at p. 335; at p. 336; Code-A-Phone, 1620ERK.

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