Measuring – testing – or signalling instruments – Security or signal instrument or casing – Visual
Patent
1988-01-11
1990-07-17
Burke, Wallace R.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Visual
Patent
active
D03092739
REFERENCES:
patent: D128037 (1941-07-01), Carver
patent: 2525728 (1950-10-01), Sauer
patent: 2561016 (1951-07-01), Ford et al.
patent: 2869504 (1959-01-01), Andrews et al.
Myers Frank
Williams Roger L.
APH Road Safety Ltd.
Burke Wallace R.
Jackson Marcus
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