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| Patents for H. M. Vance | |||||
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| Number | Date | Patentee | Title | Type | |
| 606,543 | Jun. 28, 1898 | E.E. Hanna | Self-lubricating engine | internal combustion engines | |
| 691,339 | Jan. 14, 1902 | T.W. Capen, A.J. Gates | Rock or ore breaker | ore processing apparatus | |