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| All Patents in class 72/99 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 209,588 | Nov. 05, 1878 | J.S. Seaman | Machine for Edging, Sizing and Straightening Non-Cylindrical Metal-Bars | ||
 | 558,591 | Apr. 21, 1896 | P. Medart | Machine for straightening and polishing shafting | |
| 3,540,251 | Nov. 17, 1970 | C.B. Page | Cross-roll straightener drive assembly | ||
| 3,590,618 | Jul. 06, 1971 | W. Hyams | Cross roll straightener machine | ||