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All Patents in class 451/344
Patents 1 - 15 of 24
First set of recordsNext set of recordsLast set of records
220,290Oct. 07, 1879J.M. HunterImprovement in stocks for grinding and drilling toolseggbeater drills
791,301May 30, 1905F. StahlSaw-gumming machinesaw gummers
972,446Oct. 11, 1910G.F. HallFloor dressing machine
1,210,145Dec. 26, 1916L.V. CalhounFolding grindstone-framegrindstone frames
1,229,401Jun. 12, 1917S.D. Black, A.G. DeckerDrill gearinghandheld power tools
1,281,988Oct. 15, 1918E. MadisonSawing Machinehandheld circular saws
1,352,581Sep. 14, 1920A.A. ClarkeHandle attachment for surface-treating machines
1,475,153Nov. 20, 1923H. AthenasPortable electric combination drillhandheld drills
1,784,133Dec. 09, 1930A.G. DeckerElectric drive for grinder wheels
1,795,262Mar. 03, 1931H.L. MyersBase machine
1,987,837Jan. 15, 1935A.W. MallPortable grinding machine
2,014,229Sep. 10, 1935A.N. EmmonsPortable slab cutting machine
2,016,725Oct. 08, 1935W.W. Price, C.W. RipschAbrasive machinehandheld sanders
2,201,420May 21, 1940H.M. ZschauDisc sander for floorshandheld sanders
2,286,293Jun. 16, 1942A.W. MallGrinding machine
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