Measuring – testing – or signalling instruments – Security or signal instrument or casing – Alarm or control thereof
Patent
1984-08-09
1986-06-17
Bullock, B. J.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Alarm or control thereof
Patent
active
D02842726
REFERENCES:
patent: D260378 (1981-08-01), Mallory
patent: D270625 (1983-09-01), Hiltenbrand
patent: 3863076 (1975-01-01), Steele et al.
patent: 3900795 (1975-08-01), Larsen et al.
Alarm Supply Co., Inc., 1984, p. 147, Smoke Detectors #1769 AC-1, located in lower right corner.
Bullock B. J.
Gitlin Suzanne N.
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