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| Patents for Robert E. McKelvey | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,473,963 | Jun. 21, 1949 | R.E. McKelvey | Speed selection unit | drill presses | |
| 2,506,514 | May 02, 1950 | R.E. McKelvey | Reduction drive for drill presses and the like | industrial machine pulleys and belt drive mechanisms | |