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| Patents for Perley Belknap | |||||
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| Number | Date | Patentee | Title | Type | |
| 72,380 | Dec. 17, 1867 | C.R. Ely | Improvement in head-blocks for sawmills | sawmill headblocks | |
| 163,309 | May 18, 1875 | C.R. Ely | Improvement in head-blocks for saw-mills | sawmill headblocks | |