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All Patents in class 408/223
Patents 1 - 15 of 39
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NumberDatePatenteeTitleType
82Nov. 17, 1836G. PageSpiral bit with countersink for setting screwsdrill bits
166Apr. 17, 1837J. BarnsStanding Presscotton presses
1,723Aug. 14, 1840W.L. HarleyMachine for boring and mortising in chair seats, legs, and armsdrilling and boring
4,829Oct. 29, 1846J. GuildBoring and Cutting Screws on Bedsteadswood threading machines
7,083Feb. 12, 1850G. FlauttAuger for boring-machinesdrilling and boring
36,534Sep. 23, 1862N.C. SanfordImprovement in Augersauger bits
42,075Mar. 29, 1864E. CaswellImprovement in machines for boring wagon-hubswheelwright
60,207Dec. 04, 1866H.C. LewisImproved Countersink Bitcountersinks
89,097Apr. 20, 1869C. WardwellImprovement in Augersauger bits
95,846Oct. 12, 1869S.A. SmithImprovement in Combined Bit and Tapauger bits
104,335Jun. 14, 1870C. MonsonImprovement in Augersauger bits
155,148Sep. 22, 1874B. ForstnerForstner Bitdrill bits
164,999Jun. 29, 1875G.L. HoltTwist Drill for Woodtwist drill bits
216,023Jun. 03, 1879R.T. CraneImprovement in Boring and Reaming Toolstapered reamers
248,854Nov. 01, 1881P.A. GladwinAuger Bit with Cross-Channel Lead Screwauger bits
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