Smoke detector tester

Details Smoke detector tester Smoke detector tester

1981-12-28

1984-08-21

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Food preparation type

Patent

active

D02751836

REFERENCES:
patent: 718689 (1903-01-01), Bingham
patent: 4271693 (1981-06-01), Bute
patent: 4301674 (1981-01-01), Haines

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