Measuring – testing – or signalling instruments – Security or signal instrument or casing – Alarm or control thereof
Patent
1981-05-26
1984-01-03
Burke, Wallace R.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Alarm or control thereof
D13 12, D1005
Patent
active
D02720507
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Gibbs Terence E.
Wagner Walter
American District Telegraph Company
Burke Wallace R.
Giannetti Thomas L.
Wilder Lynn
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