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| Patents for Josephus H. Clark | |||||
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| Number | Date | Patentee | Title | Type | |
| 116,181 | Jun. 20, 1871 | S.W. Harris | Improvement in sawmills | reciprocating sawmills | |
| 120,514 | Oct. 31, 1871 | S.W. Harris | Improvement in saw-mill head-blocks | sawmill headblocks | |