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| Patents for Lester E. Pratt | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 846,723 | Mar. 12, 1907 | C.W. Blood | Radial Setting Gage for Cutter Head Knives | |
| 873,657 | Dec. 10, 1907 | C.W. Blood, C.G. Osteman | Work-support for bottom cutter-heads of wood-planers | ||
| 874,355 | Dec. 17, 1907 | C.W. Blood, C.G. Osteman | Knife-jointer for the bottom cutter-heads of wood-planers | ||