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Patents Granted on 1981-08-04
Patents 1 - 2 of 2
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NumberDatePatenteeTitleType
4,281,538Aug. 04, 1981E.C. DudekTransducer for indicating torque
4,281,928Aug. 04, 1981A.N. BrunsonOptical Transit Square with Focusable Crossing Telescopessurveyor
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