Measuring – testing – or signalling instruments – Security or signal instrument or casing – Visual
Patent
1988-09-26
1991-03-26
Lucas, Susan J.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Visual
D10114
Patent
active
D03156966
REFERENCES:
patent: D169221 (1953-03-01), Reingold
patent: 1279159 (1918-09-01), Riggs
patent: 2375121 (1945-05-01), McClellan
patent: 2401940 (1946-06-01), Lange
patent: 2603700 (1952-07-01), Martin
patent: 2740105 (1956-03-01), Dorfman et al.
patent: 3128516 (1964-04-01), Halvarson
patent: 3721374 (1973-03-01), Eby
patent: 3779436 (1973-12-01), Burland
Dietz, "Omni-Chief" Emergency Light Bar, 1975.
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