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All Patents in class 72/444
Patents 1 - 15 of 36
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NumberDatePatenteeTitleType
17,411May 26, 1857M. PeckDrop-Pressdrop hammers
17,634Jun. 23, 1857H. PierceMachine for Straightening Knife-Bladesforging dies
27,804Apr. 10, 1860D. HowellTrip-Hammertrip and helve hammers
74,868Feb. 25, 1868C. VogelTrip Hammertrip and helve hammers
78,291May 26, 1868T.P. KeelerDrop Hammerdrop hammers
160,483Mar. 02, 1875N.C. StilesDrop Hammerdrop hammers
265,655Oct. 10, 1882W.T. BrowneRotary Hammerrotary hammers
333,486Dec. 29, 1885H. St. LawrenceForging Machineforging presses
350,007Sep. 28, 1886F.M. LeavittDrop-hammerdrop hammers
402,526Apr. 30, 1889H.B. HughesGold Beater's Hammerjeweler
550,581Dec. 03, 1895W.H. BottingPower Hammerpower hammers
576,273Feb. 02, 1897F. LombardDrop Hammerdrop hammers
609,836Aug. 30, 1898G. RowbottomDrop Hammerdrop hammers
639,538Dec. 19, 1899H.G. DittbennerPower-hammerdrop hammers
706,151Aug. 05, 1902W. BauermeisterPower Hammerpower hammers
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