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Patents for Roy G. Kirby | |||||
Number | Date | Patentee | Title | Type | |
2,641,874 | Jun. 16, 1953 | R.G. Kirby | Grinding Machine | cam grinding machines | |
2,641,875 | Jun. 16, 1953 | J. Decker, J.M. Morgan, Jr., R.G. Kirby | Grinding Wheel Speed Regulator | grinding machines |