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| Patents for Ingersoll Milling Machine Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,273,870 | Feb. 24, 1942 | E.M. Bowen, F.J. Kampmeier | Machine Tool | milling machines | |
| 2,415,158 | Feb. 04, 1947 | E.M. Bowen | Machine Tool | milling machines | |
| 3,009,294 | Nov. 21, 1961 | T.J. Lindem, J. van Roojen | Grinder with wheel dresser | tool grinders | |