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| Patents for James H. Westcott | |||||
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| Number | Date | Patentee | Title | Type | |
| 470,369 | Mar. 08, 1892 | J.H. Westcott | Lathe-chuck | metal lathe chucks | |
| 470,370 | Mar. 08, 1892 | J.H. Westcott | Lathe-chuck | metal lathe chucks | |
| 527,227 | Oct. 09, 1894 | J.H. Westcott | Drill-chuck | drill press chucks | |
| 685,890 | Nov. 05, 1901 | J.H. Westcott | Lathe Chuck | metal lathe chucks | |
| 848,945 | Apr. 02, 1907 | J.H. Westcott | Compound vise | compound vises | |
| 875,022 | Dec. 31, 1907 | J.H. Westcott | Chuck | metal lathe chucks | |