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| Patents for Henry Harold Poort | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 2,625,797 | Jan. 20, 1953 | J.H. Shaver, H.H. Poort | Hydraulic eductor valve | |
| 3,089,412 | May 14, 1963 | H.H. Poort | Bowling Ball Press | ||