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Patents for A. F. Ingersoll | |||||
Number | Date | Patentee | Title | Type | |
392,597 | Nov. 13, 1888 | T. Eynon | Cutting-tool for milling and gear-cutting machines | milling machine cutters | |
417,776 | Dec. 24, 1889 | T. Eynon | Milling-tool | milling machine cutters |