Combined safety switch and alarm unit

Measuring – testing – or signalling instruments – Security or signal instrument or casing – Alarm or control thereof

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1005

Patent

active

D03956130

REFERENCES:
patent: D312222 (1990-11-01), Sawyer
patent: D316231 (1991-04-01), Inglima
patent: D321330 (1991-11-01), Gagnon et al.
patent: D333796 (1993-03-01), Bannon

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