Measuring – testing – or signalling instruments – Security or signal instrument or casing – Alarm or control thereof
Patent
1979-04-26
1982-02-02
Lucas, Susan J.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Alarm or control thereof
D1005
Patent
active
D02628694
REFERENCES:
patent: 3486026 (1969-12-01), Bez
patent: 3653021 (1972-03-01), Litman et al.
Mountain West Alarm Supply Co., Catalog A-78, .COPYRGT.1977, p. 21, Infrared Burglar Detector.
Guscott John K.
Zaccai Gianfranco D.
American District Telegraph Company
Lucas Susan J.
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