Combined smoke detector control unit and smoke detector

Details Combined smoke detector control unit and smoke detector Combined smoke detector control unit and smoke detector

1990-06-21

1993-03-09

Burke, Wallace R.

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Alarm or control thereof

Patent

active

D03337960

REFERENCES:
patent: D241323 (1976-09-01), Sparks et al.
patent: D246034 (1977-10-01), Sparks et al.
patent: D297219 (1988-08-01), Taylor
patent: 3226703 (1965-12-01), Finkle
patent: 3890513 (1975-06-01), Barleen et al.
patent: 4538137 (1985-08-01), Kimura
patent: 4617560 (1986-10-01), Gutmann
patent: 4792797 (1988-12-01), Tanguay

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