Measuring – testing – or signalling instruments – Security or signal instrument or casing – Alarm or control thereof
Patent
1981-11-09
1983-12-06
Burke, Wallace R.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Alarm or control thereof
D10104, D1005
Patent
active
D02716712
REFERENCES:
patent: D260975 (1981-09-01), Lam
patent: 3226703 (1965-12-01), Finkle
patent: 4257039 (1981-03-01), Webb et al.
American District Telegraph Company
Burke Wallace R.
Gitlin Suzanne N.
Grover James H.
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