Measuring – testing – or signalling instruments – Security or signal instrument or casing – Visual
Patent
1991-08-19
1993-03-09
Burke, Wallace R.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Visual
Patent
active
D03337987
REFERENCES:
patent: D109426 (1938-04-01), Sauer
patent: 4237446 (1980-12-01), Roberts
patent: 4307375 (1981-12-01), Marshall, Sr.
patent: 4916429 (1990-04-01), Hicks et al.
Burke Wallace R.
Jackson Marcus
Smith Hugh E.
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