Measuring – testing – or signalling instruments – Security or signal instrument or casing – Alarm or control thereof
Patent
1981-06-17
1984-10-16
Lucas, Susan J.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Alarm or control thereof
Patent
active
D02759365
REFERENCES:
patent: D253753 (1979-12-01), Poesl
patent: 3878539 (1975-04-01), Gooding
patent: 4151520 (1979-04-01), Full
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