Measuring – testing – or signalling instruments – Security or signal instrument or casing – Visual
Patent
1991-04-22
1993-02-16
Burke, Wallace R.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Visual
Patent
active
D03332780
REFERENCES:
patent: 3851615 (1974-12-01), Grundvig et al.
patent: 3972107 (1976-08-01), Deike
patent: 4245922 (1981-01-01), Auriemma
patent: 4435107 (1984-03-01), Sweeney
Burke Wallace R.
Heiko Burton S.
Jackson Marcus
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