Smoke detector

Details Smoke detector Smoke detector

1976-08-27

1978-06-27

Lucas, Susan J.

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Alarm or control thereof

D1006

Patent

active

D02482835

REFERENCES:
patent: D238345 (1976-01-01), Montalbano
patent: 3391402 (1968-07-01), Lucas et al.
Audiotex Security Products Bulletin, Rec'd 12-1974, Personal-Sentry Alarm.
Signal Science Alarm Bulletin, Rec'd 5-1973, Whistle Switch.

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