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| Patents Granted on 1865-03-21 | |||||
| Number | Date | Patentee | Title | Type | |
| 46,890 | Mar. 21, 1865 | D. Eldridge | Improvement in fly-wheels | ||
| 46,953 | Mar. 21, 1865 | L.S. Starrett | Butter Worker | household tools | |
| 46,966 | Mar. 21, 1865 | A. Beekman | Improvement in sawing machines | wheelwright | |
| 46,972 | Mar. 21, 1865 | A. Partridge | Improvement in Mallets | mallets | |