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| Patents for Charles I. Humphrey | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 129,102 | Jul. 16, 1872 | W. Clemson | Improvement in Attaching Handles to Cross-Cut Saws | |
 | 130,018 | Jul. 30, 1872 | W. Clemson | Improvement in Handles for Crosscut-Saws | |
 | 145,628 | Dec. 16, 1873 | W. Clemson | Improvement in Saw Handles | |
 | 146,749 | Jan. 27, 1874 | W. Clemson | Improvement in Handles for Crosscut-Saws | |
 | RE7,433 | Dec. 19, 1876 | W. Clemson | Improvement in Handles for Crosscut-Saws | |
 | 192,704 | Jul. 03, 1877 | W. Millspaugh | Improvement in corn-knives | |