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| Patents Granted on 1844-01-20 | |||||
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| Number | Date | Patentee | Title | Type | |
| AI67 | Jan. 20, 1844 | J. Battin | Coal breaking and screening | ||
| 3,408 | Jan. 20, 1844 | B. Potter, Jr., A.F. Potter | Machine for turning boat-oars | pattern lathes | |
| 3,411 | Jan. 20, 1844 | T.C. Theaker | Head and tail blocks of sawmills | sawmill headblocks | |
| 3,412 | Jan. 20, 1844 | J. Miller | Tail-block of sawmills | sawmill tailblocks | |