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| Patents for C. E. Van Doren | |||||
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| Number | Date | Patentee | Title | Type | |
| 517,073 | Mar. 27, 1894 | J.D. Sloan | Micrometer Calipers | micrometers | |
| 551,467 | Dec. 17, 1895 | O.H. Hanson | Wrench | screw adjust wrenches | |