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| Patents for Washington Obenchain | |||||
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| Picture | Number | Date | Patentee | Title | |
| 23,484 | Apr. 05, 1859 | W. Obenchain | Machine for Making Wooden Patterns for Cog-Wheels, &c. | ||
| 341,858 | May 11, 1886 | W. Obenchain, L.E. Russell | Self Propelling Vehicle | ||