Smoke alarm

Details Smoke alarm Smoke alarm

1989-11-13

1991-09-03

Burke, Wallace R.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Volume, flow or rate

Patent

active

D03196003

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patent: D274368 (1984-06-01), Skarman
patent: D283407 (1986-04-01), Fenne
patent: D288007 (1987-01-01), Jonas et al.
patent: D308947 (1990-07-01), Downing
patent: 4424553 (1984-01-01), Marsocci et al.
patent: 4525703 (1985-06-01), Bellino

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