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| Patents for James L. Chapman | |||||
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| Number | Date | Patentee | Title | Type | |
| 63,977 | Apr. 16, 1867 | S.C. Wright | Lathe clutch | metalworking power transmission | |
| 566,060 | Aug. 18, 1896 | G.D. Chapman | Lathe | engine lathes | |
| 573,050 | Dec. 15, 1896 | E.L. Taft | Molder for curved surfaces | molders | |