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| All Patents in class 72/182 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 245,741 | Aug. 16, 1881 | T.W. Webb, P.D. Nicols | Machine for Twisting Drill Blanks | ||
 | 1,144,459 | Jun. 29, 1915 | F.V. Burman | Angle-iron-bending machine | |