Measuring – testing – or signalling instruments – Security or signal instrument or casing – Alarm or control thereof
Patent
1981-11-12
1984-01-17
Burke, Wallace R.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Alarm or control thereof
D1005
Patent
active
D02722372
REFERENCES:
patent: 920123 (1909-05-01), Fawcett
patent: 1374684 (1912-05-01), Rieck
patent: 3567882 (1971-03-01), Beck
patent: 3932856 (1976-01-01), Tremont
patent: 3968484 (1976-07-01), Weber
patent: 4376276 (1983-03-01), Barta
On Guard., Catalogue 727r., May 10, 1973, p. 5, All Purpose Switch, MD848B, location-lower right hand corner.
Burke Wallace R.
Gitlin Susanne N.
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