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| Patents for Vulcan Iron Works (IA) | |||||
| Number | Date | Patentee | Title | Type | |
| 710,871 | Oct. 07, 1902 | A.A. Koch | Boring and tenoning machine | drill presses | |
| CA-84,676 | Jan. 05, 1904 | A.A. Koch | Boring and tenoning machine | drill presses | |