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| Patents for Joseph T. Ryerson & Son | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,631,386 | Jun. 07, 1927 | A. Schaaf, J.O. Groff, W. Seymour | Metal Bending Machine | metal bending machines | |
| 1,659,426 | Feb. 14, 1928 | C.M. Conradson | Milling Machine | milling machines | |
| 1,659,460 | Feb. 14, 1928 | C.M. Conradson | Milling Machine | milling machines | |
| 1,660,477 | Feb. 28, 1928 | C.M. Conradson | Radial Drilling Machine | radial drill presses | |
| 1,683,448 | Sep. 04, 1928 | C.M. Conradson | Selective Geared Head Lathe | metalworking machine mechanisms | |