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| Patents for John B. Harding | |||||
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| Number | Date | Patentee | Title | Type | |
| 98,821 | Jan. 11, 1870 | J. Watson | Milling Machine | milling machines | |
| 100,473 | Mar. 01, 1870 | J. Watson | Lathe | metal lathes | |
| 108,305 | Oct. 11, 1870 | C. Van Haagen | Improved Planing Mechanism | metal planers | |
| 110,407 | Dec. 20, 1870 | C. Van Haagen | Improvement in grooving-tools | milling machine accessories | |
| 111,084 | Jan. 17, 1871 | T. Reaney | Improvement in tables for drilling-machines | drilling and boring | |