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| Patents for Hiram P. Dillingham | |||||
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| Number | Date | Patentee | Title | Type | |
| 51,385 | Dec. 05, 1865 | H.P. Dillingham | Improvement in saws | saw teeth | |
| 71,859 | Dec. 10, 1867 | H.P. Dillingham | Improvement in guides for saws in saw-mills | circular sawmills | |