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All Patents in class 408/227
Patents 1 - 15 of 19
First set of recordsNext set of recordsLast set of records
NumberDatePatenteeTitleType
8,752XApr. 08, 1835N.J. LampmanWood augerdrill bits
25,990Nov. 01, 1859S. WoodAugerauger bits
60,683Jan. 01, 1867W. BurlingameReamerreamers
85,021Dec. 15, 1868C. MurdockImprovement in cylindrical sawsaw teeth
385,088Jun. 26, 1888A. BenzieDrilling Tooldrill bits
456,258Jul. 21, 1891A.F. Daniels, D.B. HuttonDrill for Drilling Square Holesdrill bits
663,455Dec. 11, 1900K.O. MuehlbergCutter Toolreamers
1,283,740Nov. 05, 1918C.B. GroffDrill
1,680,466Aug. 14, 1928W.H. EvansReaming toolreamers
1,680,510Aug. 14, 1928W.H. EvansValve-seat reamervalve and seat maintenance
1,827,510Oct. 13, 1931W.H. EvansValve seat reamervalve and seat maintenance
1,827,511Oct. 13, 1931W.H. EvansReamervalve and seat maintenance
1,884,460Oct. 25, 1932J.H. WilliamsFacing Toolfacing heads
1,941,790Jan. 02, 1934E.E. DavisReamerreamers
2,036,656Apr. 07, 1936R.S. Pyne, B.F. StowellValve seat cuttervalve and seat maintenance
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