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| Patents for Robert Christy | |||||
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| Picture | Number | Date | Patentee | Title | |
| 1,837X | Nov. 21, 1812 | R. Christy | Elevator for raising fluids or grain | ||
 | 5,803X | Jan. 29, 1830 | A.L. (Lemont) | Screw dies and taps | |