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| Patents for Israel Johnson Jr. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 4,331X | Feb. 08, 1826 | I. Johnson, Jr. | Reciprocating sawmill | |
| 5,475X | May 01, 1829 | I. Johnson, Jr. | For a machine to be used as a Hemp and Flax Dresser; as a Grain Thrasher; as a Grinder of Grain, Plaster, Paints, Barks, Dye-woods, and other hard substances; as a Cider and Clover Mill, and a Hulling Machine for Barley, Oats, Rice, &c. &c. | ||
| 5,486X | May 07, 1829 | I. Johnson, Jr. | Art of sawing boards and construction of saw mills | ||