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| Patents for Henry Francis | |||||
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| Number | Date | Patentee | Title | Type | |
| 16,470 | Jan. 27, 1857 | G.N. Cummings | Clamp for Soldering Glasses | ||
| 1,278,629 | Sep. 10, 1918 | H. Francis | Milling and the Like Cutter | milling machine cutters | |
| 1,434,995 | Nov. 07, 1922 | H. Francis | Cutting or Boring Tool or Boring Head | boring heads | |