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All Patents in class 408/195
Patents 61 - 70 of 70
First set of recordsPrevious set of recordsLast set of records
857,647Jun. 25, 1907G.T. MillerGasket-Cutterwasher cutters
860,020Jul. 16, 1907J.H. DearholtBoring-Tool or Augeradjustable drill bits
879,309Feb. 18, 1908E. PastoreExpansible bitadjustable drill bits
884,111Apr. 07, 1908O. TackBoring-Tooladjustable drill bits
931,593Aug. 17, 1909L.W. GarnerExpansible Boring-Bitadjustable drill bits
963,468Jul. 05, 1910E. PastoreExpansible Bitadjustable drill bits
970,789Sep. 20, 1910G.P. ButlerExpansible Bitadjustable drill bits
1,056,670Mar. 18, 1913L.S. HaydenExpansion Bitdrill bits
1,379,332May 24, 1921G.P. ButlerExpansion-bitadjustable drill bits
1,545,030Jul. 07, 1925C.A. BestBoring tooltwist drill bits
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