Measuring – testing – or signalling instruments – Security or signal instrument or casing – Alarm or control thereof
Patent
1992-09-09
1993-10-19
Burke, Wallace R.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Alarm or control thereof
Patent
active
D03404161
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System Sensor, Model 1800 2-Wire Systems Detectors, 2 pg. brochure, May 1988.
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Burke Wallace R.
Jackson Marcus
Pittway Corporation
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