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All Patents in class 72/169
Patents 1 - 15 of 21
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NumberDatePatenteeTitleType
146,329Jan. 13, 1874M.B. FlynnMachines for Bending Tirestire bending tools
169,260Oct. 26, 1875J.W. GroverMachines for Making Spring Washersmetal washer making machines
216,254Jun. 10, 1879J.F. BenderTire Bending Machinetire bending tools
359,509Mar. 15, 1887H.B. KeiperTire Benderblacksmith
387,848Aug. 14, 1888J.F. BenderTire Benderblacksmith
406,984Jul. 16, 1889I.L. AnwerterTire Bendertire bending tools
408,685Aug. 13, 1889C.A. BertschBending Rollmetal bending machines
510,764Dec. 12, 1893C.A. BertschMetal Bending Machinemetal bending machines
543,558Jul. 30, 1895E. Faller, C. OberlePipe Forming Machinesheet metal
543,815Jul. 30, 1895W. Lewis, W. SellersBending Rolls
877,038Jan. 21, 1908C.A. BertschBending Rollsmetal bending machines
1,340,320May 18, 1920J.M. BrownCrimped-elbow-bending machine
1,406,004Feb. 07, 1922P.R. HahnemannMetal Working Machinethread rolling machines
1,735,243Nov. 12, 1929P.R. HahnemannSlip Roll Forming Machinesheet metal forming rolls
1,742,654Jan. 07, 1930P.R. HahnemannSlip Rol Forming Machinesheet metal forming rolls
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