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| All Patents in class 72/157 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,252,123 | Jan. 01, 1918 | F.J. Kitowski | Device for Forming Eyes on Springs | ||
| 2,514,830 | Jul. 11, 1950 | C.J. Bath | Metal Stretching and Contour Forming Machine | metal stretch forming machines | |
| 3,260,091 | Jul. 12, 1966 | R.M. Shaw, Jr. | Bending Machine | metal bending machines | |
| 3,949,584 | Apr. 13, 1976 | L.G. Adleman, V.W. Pearson | Bending apparatus having a roller support unit for E.M.T., conduit and thin wall tubing | electrical conduit apparatus | |