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| Patents for Charles H. Avery | |||||
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| Number | Date | Patentee | Title | Type | |
| 112,572 | Mar. 14, 1871 | J.S. Everitt, C.H. Avery | Improvement in head-blocks for saw-mills | sawmill headblocks | |
| RE9,217 | May 25, 1880 | J.S. Everitt, C.H. Avery | Head-block for saw-mills | sawmill headblocks | |
| 588,049 | Aug. 10, 1897 | C.H. Avery | Wrench | quick adjust wrenches | |