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| Patents for John N. Kaufholz | |||||
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| Number | Date | Patentee | Title | Type | |
| 272,704 | Feb. 20, 1883 | J.N. Kaufholz | Machine for Centering Shafts Axles, &c. | cutting-off and centering machines | |
| 360,530 | Apr. 05, 1887 | J.N. Kaufholz | Slotting Attachmentt for Metal planers | metal planer accessories | |