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| All Patents in class 72/176 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 331,904 | Dec. 08, 1885 | S. Moore | Machine for Making Twist Drills | ||
| 354,069 | Dec. 07, 1886 | S. Moore | Machine for Making Twist Drills | ||
| 1,388,903 | Aug. 30, 1921 | F.H. Stolp | Tube Making Machine | ||
| 2,254,289 | Sep. 02, 1941 | J. Jensen | Sheet Metal Working Machine | ||