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| Patents for George S. Boutwell | |||||
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| Number | Date | Patentee | Title | Type | |
| 218,847 | Aug. 26, 1879 | J.F. Wood | Improvement in journal-boxes for shafts of stone-crushers | industrial machine bearings | |
| 227,402 | May 11, 1880 | J.F. Wood | Treatment of emery-wheels | grinding wheels | |