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All Patents of Type: metal twisting machines | |||||
Number | Date | Patentee | Title | Type | |
106,720 | Aug. 23, 1870 | N.C. Perry | Improvement in Machines for Bending Screw-Eyes | metal twisting machines | |
185,441 | Dec. 19, 1876 | W. Gibb | Machine for Forming Split Keys | metal twisting machines | |
353,261 | Nov. 23, 1886 | F.M. Leavitt | Automatic Ear Bending Machine | metal twisting machines | |
1,395,617 | Nov. 01, 1921 | W. Stubbs | Apparatus for Twisting Metal Bars | metal twisting machines |