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Patents Granted on 1940-02-20
Patents 1 - 12 of 12
First set of recordsLast set of records
NumberDatePatenteeTitleType
2,190,839Feb. 20, 1940J. JensenBending Brakesheet metal brakes
2,190,858Feb. 20, 1940A.F. BennettLubricating Device for Machine Toolsmilling machines
2,190,899Feb. 20, 1940F.J. VierlingGaugedepth gauges
2,190,911Feb. 20, 1940K.W. NebelPortable shearmetal shearing machines
2,190,920Feb. 20, 1940R.V. HanchettPower operated saw swagesaw sharpening machines
2,190,967Feb. 20, 1940H.W. ZimmermanTorque measuring wrenchtorque wrenches
2,190,988Feb. 20, 1940E.K. JohansenDuplicating Machinemilling machines
2,191,131Feb. 20, 1940M.E. MartellottiBacklash Eliminatormetalworking machine mechanisms
2,191,137Feb. 20, 1940W. TribleHeadstock Positioning Mechanismgrinding machines
2,191,155Feb. 20, 1940C.L. MattisonPulley supporting device
2,191,347Feb. 20, 1940H.J. Siekmann, W.F. GroeneCrankshaft lathecrankshaft lathes
2,191,410Feb. 20, 1940W.F. OcenasekJigsaw blade support and work hold-downscrollsaws
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