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All Patents in class 74
Patents 2356 - 2370 of 3500
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NumberDatePatenteeTitleType
1,660,137Feb. 21, 1928A.M. Sosa, A.E. RobinsonDrilling Machineradial drill presses
1,660,477Feb. 28, 1928C.M. ConradsonRadial Drilling Machineradial drill presses
1,660,579Feb. 28, 1928J. RothHammer drill attachment for electric drillhandheld power tool accessories
1,661,131Feb. 28, 1928G.B. DuffieldExpansible Collapsible Elementsteam engine packing
1,662,660Mar. 13, 1928H.C. ClayController for Variable Speed Transmission industrial machine speed and direction changing mechanisms
1,662,959Mar. 20, 1928K.H. CrumrineTool Postlathe tool holders and tool posts
1,663,267Mar. 20, 1928V.V. ColbyMeans for cuttingscrollsaws
1,663,493Mar. 20, 1928H.C. ClayControl for Variable Speed Mechanism industrial machine speed and direction changing mechanisms
1,664,851Apr. 03, 1928G.M. ClassTool Postlathe tool holders and tool posts
1,664,889Apr. 03, 1928D.C. KlausmeyerDetachable Gear Unitmetalworking machine gearing
1,664,919Apr. 03, 1928E. EkOperating devicewood planer accessories
1,666,422Apr. 17, 1928D.C. KlausmeyerMaster Radial Drill Speed Boxmetalworking speed changing mechanisms
1,666,906Apr. 24, 1928C.L. MattisonWood-turning machinewood lathes
1,668,647May 08, 1928A.M. JohnsonFeed mechanism for drilling machinesdrill presses
1,669,319May 08, 1928R.M. BennethumWindmillwind power apparatus
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