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| All Patents in class 142/51 | |||||
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| Number | Date | Patentee | Title | Type | |
| 24,642 | Jul. 05, 1859 | J. Irving | Machine for turning ovals | wood lathes | |
| 33,334 | Sep. 24, 1861 | A.H. Brown | Improved machine for turning ovals | wood lathes | |
| 78,919 | Jun. 16, 1868 | A.P. Bonte | Elliptical lathe | wood lathes | |
| 94,130 | Aug. 24, 1869 | P. Pryibil | Oval lathe | wood lathes | |
| 201,781 | Mar. 26, 1878 | H.C. Heckendorn | Improvement in oval-turning lathes | wood lathes | |
| 1,100,130 | Jun. 16, 1914 | N. Grein | Woodworking-machine | wood shapers | |