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| Patents for Richard C. Lamkin | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,491,422 | Jan. 27, 1970 | H.K. Kelly, T.J. McDonnell, R.C. Lamkin | Cutter | cutters | |
| 3,613,485 | Oct. 19, 1971 | R.C. Lamkin, T.J. McDonnell, H.K. Kelly | Method of fabricating a cutter | cutters | |