Smoke detector

Details Smoke detector Smoke detector

1978-01-03

1980-05-06

Lucas, Susan J.

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Alarm or control thereof

D1005

Patent

active

D02549018

REFERENCES:
patent: D119200 (1940-02-01), Van Houten
patent: 3226703 (1965-12-01), Finkle
Institutions, Oct. 1960, p. 118, Fire Detector.
"Pyr-A-Larm", Fire & Smoke Detection Systems Cat. 1971, p. 2, Thermal Fire Detector (left).

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