Smoke and fire alarm

Details Smoke and fire alarm Smoke and fire alarm

1985-12-20

1988-08-16

Kemper, Catherine E.

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Alarm or control thereof

Patent

active

D02972220

REFERENCES:
patent: D247665 (1978-04-01), Larsen
patent: D253400 (1979-11-01), Vander Wilt
patent: D262868 (1982-02-01), Westphal
patent: D271287 (1983-11-01), Fenne
patent: D276417 (1984-11-01), Fenne
patent: D279769 (1985-07-01), Thornton et al.
patent: D283407 (1986-04-01), Fenne

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