Measuring – testing – or signalling instruments – Security or signal instrument or casing – Alarm or control thereof
Patent
1987-07-29
1990-04-17
Burke, Wallace R.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Alarm or control thereof
Patent
active
D03072452
REFERENCES:
patent: D234920 (1976-04-01), Koster et al.
patent: D261740 (1981-11-01), Lederer
patent: D264318 (1982-05-01), Guscott et al.
patent: D275657 (1984-09-01), Kahl, Jr.
patent: D275658 (1984-09-01), Kahl, Jr. et al.
Burke Wallace R.
C & K Systems Inc.
Jackson Marcus
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