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Patents Granted on 1920-12-??
Patents 1 - 15 of 54
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NumberDatePatenteeTitleType
GB-154,507Dec. 02, 1920A. ParkinsonImprovements in or relating to brush lifting and short circuiting means for induction motorsinduction motors
FR-510,319Dec. 02, 1920W. Owen, J.H. MelloyImprovements to Gear Cutting Machines, Slotting Machines and Other Similar Machinesgear making machines
1,361,007Dec. 07, 1920N.E. BrownCenter cleaning and oiling deviceindustrial machine lubrication
1,361,021Dec. 07, 1920L.G. CopemanTool Holdertool holders
1,361,130Dec. 07, 1920P. YorkWrenchwrench handle components
1,361,136Dec. 07, 1920J. BurkeConstruction of smaller motorselectric motors
1,361,156Dec. 07, 1920F.O. Jaques, Sr.Micrometer Calipersmicrometers
1,361,198Dec. 07, 1920C.A. StrandTool Holderlathe tool holders and tool posts
1,361,219Dec. 07, 1920J.J. BartensteinValve Spring Holdervalve spring tools
1,361,335Dec. 07, 1920J.E. KampeTool Holder/ Screwdriverwatchmaker
1,361,363Dec. 07, 1920J. BurkeCompensation windingselectric motors
1,361,406Dec. 07, 1920J.V. RomigCombined Micrometer Calipermicrometers
1,361,433Dec. 07, 1920R. AllenCarpenter's planeplane cap irons
1,361,686Dec. 07, 1920M.C. ConwellToolboring heads
1,361,792Dec. 07, 1920W.F. GroeneTailstockmetal lathes
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