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| Patents for F. Llewellyn Walker | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 679,568 | Jul. 30, 1901 | E.A. Muller | Engine Lathe | |
 | 764,712 | Jul. 12, 1904 | A. Sonander, H.S. Credlebaugh | Friction Clutch | |
 | 819,965 | May 08, 1906 | H.S. Williams | Leveling Instrument | |