Measuring – testing – or signalling instruments – Security or signal instrument or casing – Visual
Patent
1991-07-26
1993-09-07
Burke, Wallace R.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Visual
Patent
active
D03390802
REFERENCES:
patent: D209880 (1968-01-01), Royer
patent: D214538 (1969-06-01), Hedgewick
patent: D219845 (1971-02-01), Hedgewick
patent: D220554 (1971-04-01), Hedgewick
Burke Wallace R.
Jackson Marcus
Schindler Edwin D.
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