Measuring – testing – or signalling instruments – Security or signal instrument or casing – Alarm or control thereof
Patent
1979-04-27
1981-05-19
Lucas, Susan J.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Alarm or control thereof
D1006
Patent
active
D02592550
REFERENCES:
patent: D240410 (1976-07-01), Fujiwara
patent: 3643249 (1972-02-01), Haywood
patent: 3732843 (1973-05-01), Pappas et al.
patent: 3878539 (1975-04-01), Gooding
Menzies John I.
Menzies Maureen
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