Measuring – testing – or signalling instruments – Security or signal instrument or casing – Alarm or control thereof
Patent
1983-01-10
1985-02-05
Bullock, B. J.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Alarm or control thereof
D10 38
Patent
active
D02774658
REFERENCES:
patent: D229085 (1973-11-01), Lutenegger
patent: D269951 (1983-08-01), Eberhardt et al.
patent: 4004228 (1977-01-01), Mullett
patent: 4300129 (1981-11-01), Cataldo
Jewelers' Circular--Keystone, 7/78, p. 153, Omega Watches--bottom left.
Bullock B. J.
Gitlin Suzanne N.
Lifeline Systems Inc.
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