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| All Patents in class 72/248 | |||||
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| Number | Date | Patentee | Title | Type | |
| 434,960 | Aug. 26, 1890 | E.E. Stow | Tinsmith's Machine | sheet metal forming rolls | |
| 627,558 | Jun. 27, 1899 | F.L. White | Drawing Die Mechanism | dies for punch presses | |
| 661,017 | Oct. 30, 1900 | C. Kuhlewind | Rolling Mill | rolling mills | |
| 1,162,536 | Nov. 30, 1915 | B.F. Winterhoff | Sheet-metal-tube-planishing machine | roller seaming machines | |
| 1,774,155 | Aug. 26, 1930 | L.S. Platou | Sheet Metal Working Machine | sheet metal | |