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All Patents in class 408/112
Patents 1 - 15 of 22
First set of recordsNext set of recordsLast set of records
NumberDatePatenteeTitleType
36,903Nov. 11, 1862W.S. HadleyTapping Guidetool holders
94,870Sep. 14, 1869W.A. ClarkImproved Washer-Cutterwasher cutters
100,772Mar. 15, 1870D. KellyCentererdrill bits
132,646Oct. 29, 1872S.C. EllisImprovement in machines for boring blind-stileswindowblind machines
143,738Oct. 14, 1873H.E. WhippleWasher-Cutterswasher cutters
393,817Dec. 04, 1888W.H. ClappPortable multi-drill mortising machinemortising machines
521,206Jun. 12, 1894F.B. CovelCentering Toollathe tools
568,932Oct. 06, 1896S.W. WilcoxBit-centering device
592,912Nov. 02, 1897M. JohnsonCentering Drill Chuckdrill press chucks
614,848Nov. 29, 1898T.J. DoranHand-operated drilldrill presses
718,996Jan. 27, 1903W. FranzRivet Cutterbolt and rivet cutters
1,831,813Nov. 17, 1931A. LevedahlCentering guidehandheld power tool accessories
2,242,510May 20, 1941S.A. CogsdillAdjustable countersink structuremetalworking countersinks
2,308,055Jan. 12, 1943S.A. CogsdillAdjustable countersink structuremetalworking countersinks
2,710,549Jun. 14, 1955S.A. CogsdillMicro-limit Countersink Driver metalworking countersinks
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