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| All Patents in class 210/769 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,217,397 | Feb. 27, 1917 | F.P. Boland | Process and means for filtering water | jeweler | |
| 3,526,589 | Sep. 01, 1970 | C.L. Swanson, P. Pan, F.H. Meller | Solids Interception System | sewage treatment apparatus | |