Measuring – testing – or signalling instruments – Security or signal instrument or casing – Visual
Patent
1990-03-19
1992-05-26
Burke, Wallace R.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Visual
Patent
active
D03264246
REFERENCES:
patent: D301209 (1989-05-01), Sakko
patent: D311704 (1990-10-01), May
patent: 2067698 (1937-01-01), Hall
patent: 2749876 (1956-06-01), Patton et al.
patent: 4815890 (1989-03-01), Duncan
Burke Wallace R.
Jackson Marcus
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