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| Patents Granted on 1846-04-11 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,453 | Apr. 11, 1846 | S.F. Morse | Improvement in electro-magnetic telegraphs | telegraphy apparatus | |
| 4,455 | Apr. 11, 1846 | W. Kumbel | Stretching leather bands | belts, belt lacing and belt lacers | |
| 4,456 | Apr. 11, 1846 | T.J. Wells | Sawmill | sawmill carriages | |