Photoelectric smoke detector

Details Photoelectric smoke detector Photoelectric smoke detector

1998-11-12

1999-07-27

Jackson, Marcus A.

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Alarm or control thereof

1005

Patent

active

D04122968

REFERENCES:
patent: D271671 (1983-12-01), Thornton, Jr.
patent: D276708 (1984-12-01), Simpson
patent: D339078 (1993-09-01), Beklke

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