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| Patents for John Crowell Jr. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 211,923 | Feb. 04, 1879 | W. Morgan | Improvement in machines for cutting wood spirals | |
 | 234,886 | Nov. 30, 1880 | A.T. Morris | Sawing-machine | |
 | 238,009 | Feb. 22, 1881 | P. Thacher | Belt Fastener | |