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| Patents for Richard Varick De Witt | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 14,779 | Apr. 29, 1856 | B. Rowe | Wrench | |
 | 15,702 | Sep. 09, 1856 | T. Mitchell | Machine for manufacturing the wooden part of brushes | |
 | 16,534 | Feb. 03, 1857 | S.C. Ellis | Machine for cutting tenons on blind slats | |
 | 19,056 | Jan. 05, 1858 | A.N. Wilcox | Lathe for turning wood | |
 | 21,746 | Oct. 12, 1858 | J. Dodge | Grinding and polishing knives | |
 | RE2,229 | Apr. 17, 1866 | J.M. Horton | Improvement in Attaching Augers to their Handles | |