Measuring – testing – or signalling instruments – Security or signal instrument or casing – Alarm or control thereof
Patent
1979-02-09
1981-09-01
Lucas, Susan J.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Alarm or control thereof
D1005
Patent
active
D02604981
REFERENCES:
patent: 3985453 (1976-10-01), Nakano et al.
Costa Hilario S.
Macmillan John M.
Conrac Corporation
Lucas Susan J.
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