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Patents Granted on 1931-02-24
Patents 1 - 9 of 9
First set of recordsLast set of records
1,793,484Feb. 24, 1931N.L. HuffRuff Reamer
1,793,714Feb. 24, 1931E. NewbergDuplex Wrenchnut wrenches
1,793,789Feb. 24, 1931F.S. FloeterTool-feed device for crank-pin-turning lathescrankshaft lathes
1,793,996Feb. 24, 1931G.H. CarlsonExercising machine
1,794,029Feb. 24, 1931G.T. PflegerCooling means for motorsmotor cooling
1,794,148Feb. 24, 1931J.G. CollinsWrecking crane
1,794,149Feb. 24, 1931J.G. CollinsStand and control means for electric portable drills
1,794,177Feb. 24, 1931C.T. JohnsonApparatus for unloading cars
1,794,340Feb. 24, 1931M.K. ParkhurstOptical Measuring Devicemeasurement gauges
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