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| Patents Granted on 1818-03-17 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,926X | Mar. 17, 1818 | M. Isaacs | Improvement in the horse boat | nautical propulsion apparatus | |
| 2,927X | Mar. 17, 1818 | M. Isaacs, M. Ulman | Application of pumps in propelling boats | nautical pumps | |