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| Patents for C. D. Olmstead | |||||
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| Number | Date | Patentee | Title | Type | |
| 14,844 | May 06, 1856 | G.W. Hill | Sawmill-dog | sawmill dogs | |
| 73,031 | Jan. 07, 1868 | C.D. Olmstead | Improvement in sawmills | reciprocating sawmills | |