Measuring – testing – or signalling instruments – Security or signal instrument or casing – Visual
Patent
1986-11-17
1989-08-29
Burke, Wallace R.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Visual
Patent
active
D03030997
REFERENCES:
patent: 1401626 (1921-12-01), Mader
patent: 2498270 (1948-03-01), Hawley
patent: 3696672 (1972-10-01), Lindsay
patent: 4286463 (1981-12-01), Cole
patent: 4553430 (1985-11-01), Behrens
patent: 4730488 (1988-03-01), David
Burke Wallace R.
Nowlin Randy
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