Interphone

Details Interphone Interphone

1983-05-19

1985-11-26

Burke, Wallace R.

Recording, communication, or information retrieval equipment

Computer, data processor equipment

D14 58, D14 52

Patent

active

D02815010

REFERENCES:
patent: D199677 (1964-12-01), Mattingly
patent: D210026 (1968-01-01), Kahn
patent: D210595 (1968-03-01), Kahn
patent: D222001 (1968-08-01), Roberts
patent: D265299 (1982-07-01), Garetsky
patent: D271089 (1983-10-01), Mallory
patent: D272050 (1984-01-01), Gibbs
patent: D272993 (1984-03-01), Chan
patent: D274518 (1984-07-01), Doodson
patent: D276599 (1984-12-01), Logan et al.
patent: 4310923 (1982-01-01), Kennedy
Housewares Mag.; Mar. 7-13, 1979, p. 23; "Pyr-A-Larm" Model P5F.
Popular Mechanics Mag. Apr. 1980, p. 184, "Door Alert" by The Bottom Line.
Popular Mechanics; Feb. 1984; Regency Models MX5000 & 3000 on P. 165.

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