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