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| Patents for Charles D. Freeman | |||||
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| Number | Date | Patentee | Title | Type | |
| 7,879 | Jan. 01, 1851 | J. Russell | Machine for turning irregular forms | pattern lathes | |
| 13,665 | Oct. 09, 1855 | D. Shive | Daguerreotype-Plate Holder | ||
| 19,736 | Mar. 23, 1858 | E.S. Gardner | Improvement in tracks for city railways | track and switches | |
| 28,214 | May 08, 1860 | R.R. Taylor | Puddling furnace | steel making furnaces | |
| 28,565 | Jun. 05, 1860 | T.S. Disston | Machine for making tabs for crosscut saws | tool maker | |