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| All Patents in class 72/168 | |||||
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| Number | Title | Classification(s) | |||
| 5,389 | Sheet-Metal Roller Tool | 72/168 | |||
| 235,878 | Machine for making rims for tops of metal vessels | 72/168, 72/172, 72/173 | |||
| 642,612 | Machine for Making Articles of Sheet Metal | 72/168, 72/172, 72/179 | |||
| 735,704 | Machine for curving pulley-rims | 72/168, 72/171, 72/173 | |||
| 1,588,817 | Bending Machine | 72/168, 72/171, 72/172, 72/179 | |||