Measuring – testing – or signalling instruments – Security or signal instrument or casing – Alarm or control thereof
Patent
1981-02-27
1983-06-07
Lucas, Susan J.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Alarm or control thereof
D1006
Patent
active
D02692562
REFERENCES:
patent: 2826656 (1958-03-01), Gordon
patent: 3753259 (1973-08-01), Donovan
patent: 4144532 (1979-03-01), Boyd
Carver Stephen D.
Lucas Susan J.
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