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| Patents Granted on 1813-04-15 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,910X | Apr. 15, 1813 | D. Cram | Machine for cutting timber | other wood sawing machines | |
| 1,911X | Apr. 15, 1813 | G. Biddis, T. Norton | Carding, spinning and roping machine | cloth carding machines | |