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| Patents for W. H. Allen | |||||
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| Number | Date | Patentee | Title | Type | |
| 159,999 | Feb. 23, 1875 | G.F. Bellows | Improvement in saw-mills | sawmill carriages | |
| 257,530 | May 09, 1882 | B.F. Sturtevant | Steam Slide Valve | steam engine valves | |