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| Patents for Roland G. Koch | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,024,030 | Mar. 06, 1962 | R.G. Koch | Coolant transfer and seal assembly having relatively rotating parts | coolant apparatus | |
| 3,498,624 | Mar. 03, 1970 | R.G. Koch, E.J. Hammond | Chuck device | drill press chucks | |