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| Patents for Richard Varick De Witt | |||||
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| Number | Title | Classification(s) | |||
| 14,779 | Wrench | 81/176 | |||
| 15,702 | Machine for manufacturing the wooden part of brushes | 144/11, 144/134.1 | |||
| 16,534 | Machine for cutting tenons on blind slats | 144/201, 144/223 | |||
| 19,056 | Lathe for turning wood | 142/38 | |||
| 21,746 | Grinding and polishing knives | 451/28 | |||
| RE2,229 | Improvement in Attaching Augers to their Handles | 279/56 | |||