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| All Patents in class 417/452 | |||||
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| Number | Date | Patentee | Title | Type | |
| 29,266 | Jul. 24, 1860 | B. Holly | Pump Lift | pumps | |
| 1,614,771 | Jan. 18, 1927 | W. Jardh, J.C. Axelson | Pump having standing-valve puller | oil well pumps | |