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| Patents for Kenneth D. Allen | |||||
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| Picture | Number | Date | Patentee | Title | |
| 2,997,207 | Aug. 22, 1961 | K.D. Allen, L.A. Botkin | Flow control valve | ||
| 4,936,701 | Jun. 26, 1990 | J.S. Amtmann, K.D. Allen | Universal Joint with Rotating Holder Sleeve | ||