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All Patents in class 72/175
Patents 1 - 13 of 13
First set of recordsLast set of records
275,029Apr. 03, 1883J.M. EvartsMachine for Bending Pipepipe bending machines
357,228Feb. 08, 1887O. PocockMachine for Bending Sheet Metalsheet metal forming rolls
408,685Aug. 13, 1889C.A. BertschBending Rollmetal bending machines
468,659Feb. 09, 1892E. HeydeBending-rollmetal bending machines
510,764Dec. 12, 1893C.A. BertschMetal Bending Machinemetal bending machines
543,815Jul. 30, 1895W. Lewis, W. SellersBending Rolls
609,807Aug. 30, 1898B. Holmes, E. HolmesMachine for Flaring and Bending Metal Hoopsbarrel making machines
877,038Jan. 21, 1908C.A. BertschBending Rollsmetal bending machines
1,144,459Jun. 29, 1915F.V. BurmanAngle-iron-bending machinemetal bending 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
2,088,746Aug. 03, 1937W.E. Kanemetal bending machinemetal bending machines
2,838,089Jun. 10, 1958R.H. WeisnerRoll forming machine with work releasing mechanism
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