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All Patents in class 72/446
Patents 1 - 15 of 29
First set of recordsNext set of recordsLast set of records
RE2,389Nov. 06, 1866B. HotchkissTrip Hammertrip and helve hammers
157,695Dec. 15, 1874J.A. Nichols, J.L. PiperMetal-Riveting Machinesriveting machines
217,725Jul. 22, 1879E.W. BlissImprovement in machinery for shaping sheet metalstamping presses
RE10,324May 08, 1883N.C. StilesDrop-hammerdrop hammers
302,520Jul. 22, 1884I.L. PenneyTrip Hammerdrop hammers
327,999Oct. 13, 1885C.M. BrownPower-hammertrip and helve hammers
357,255Feb. 08, 1887E. Welsh, A. WelshOliverfoot operated hammers
364,142May 31, 1887N.C. StilesPower-pressstamping presses
379,818Mar. 20, 1888C.J. RundquistFoot-power hammerfoot operated hammers
417,201Dec. 10, 1889M. RedlingerFoot-power hammerfoot operated hammers
435,264Aug. 26, 1890C.J. Van DepoeleReciprocating Electric Hammerdrop hammers
463,259Nov. 17, 1891E.D. EstradaMachine for Testing the Strengh of Metalstesting machines
493,874Mar. 21, 1893J. O'BrienPower Hammerpower hammers
497,013May 09, 1893C.M. BrownPower-hammerdrop hammers
799,282Sep. 12, 1905H. VigneaultPower Hammerpower hammers
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