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| Patents Granted on 1845-02-?? | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,914 | Feb. 12, 1845 | S. Whipple | Machine for cutting files | making files | |
| GB-184,510,525 | Feb. 17, 1845 | T.B. Jordan | Improvements in Machinery and Apparatus for Cutting, Carving and Engraving | carving machines | |
| 3,927 | Feb. 24, 1845 | J. Arndt | Machine for filing saws | saw sharpening machines | |
| 3,931 | Feb. 28, 1845 | S. Talbott | Steam-valve | steam engine valves | |