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| Patents for Frank D. Merchant | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 455,872 | Jul. 14, 1891 | J. Peebles, E.J. Woolf | Valve Gear for Engines | |
| 475,782 | May 31, 1892 | L. Luger | Wood-working machine | ||
 | 521,278 | Jun. 12, 1894 | E.J. Woolf | Engine | |
 | 531,285 | Dec. 18, 1894 | E.J. Woolf | Engine | |
 | 627,219 | Jun. 20, 1899 | E.J. Woolf | Air and Gas Engine | |
 | 627,220 | Jun. 20, 1899 | E.J. Woolf | Air and Gas Engine | |
 | 1,260,837 | Mar. 26, 1918 | H.G. Dittbenner, F.L. Walker | Upper saw-guide | |