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| Patents for George W. Hubbard | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 73,100 | Jan. 07, 1868 | G.W. Hubbard | Improvement in shaft-coupling | |
 | 75,273 | Mar. 10, 1868 | S.A. Smith, G.W. Hubbard | Improvement in grinding-mills | |
 | 80,546 | Aug. 04, 1868 | S.A. Smith, G.W. Hubbard | Improvement in hangers for shafting | |
 | 82,621 | Sep. 29, 1868 | G.W. Hubbard | Improvement in Hammers | |
 | 441,844 | Dec. 02, 1890 | G.W. Hubbard | Nippers | |