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| Patents for Liscomb Knap | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,444X | May 22, 1826 | L. Knap | Pumping water for domestic purposes | water pumps | |
| 4,445X | May 22, 1826 | L. Knap | Pumping water for propelling machinery | propulsion pumps | |