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| All Patents in class 101/283 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,629 | May 20, 1842 | R.M. Hoe | Double-cylinder printing-press | printer | |
| 5,200 | Jul. 24, 1847 | R.M. Hoe | Improvement in printing-presses | printer | |