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| Patents for James MacGregor Jr. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 7,730X | Aug. 28, 1833 | J. MacGregor, Jr. | Planing machine | |
 | 557 | Jan. 09, 1838 | J. MacGregor, Jr. | Planing-machine | |
 | 1,690 | Jul. 15, 1840 | J. MacGregor, Jr. | Wood plane attachment | |
 | RE79 | Jan. 15, 1846 | S.F. Morse | Improvement in the mode of communicating information by signals by the application of electro-magnetism | |
 | 7,143 | Mar. 05, 1850 | J. MacGregor, Jr. | Heating-furnace | |