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Patents Granted on 1957-12-03
Patents 1 - 4 of 4
First set of recordsLast set of records
NumberDatePatenteeTitleType
D181,598Dec. 03, 1957F.E. Munschauer, Jr., R.G. BeiterCircular shearmetal shearing machines
2,814,959Dec. 03, 1957F.L. DodgeVariable speed drivemetal lathes
2,814,964Dec. 03, 1957C.H. WerthContour boring and turning machinevertical boring mills
2,815,040Dec. 03, 1957R.V. SmithPressure relief valvesteam safety valves
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