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| Number | Title | Issue Date |
| D603435 | Dosage piston retention clip | 11/03/2009 |
| D603427 | On-off plunger | 11/03/2009 |
| D602512 | Piston assembly | 10/20/2009 |
| 7438537 | Liquid additive injection pump with mixing chamber and one way valve A liquid additive injection pump for injecting a predetermined amount of a secondary fluid into a primary fluid stream wherein a fluid mixing chamber is disposed within the pump housing assembly. A gasket having at least one one-way valve is positioned between the p... | 10/21/2008 |
| D573620 | Self sealing piston ring | 07/22/2008 |
| D525685 | One way valve gasket | 07/25/2006 |
| 7000782 | Backwash flushing filter An inline backwash, flushing filter assembly comprising a header assembly, a rotatable valve assembly, and a filter element assembly disposed within a filter housing assembly. In operation, the controller moves the turn knob of the rotatable valve assembly a one-qua... | 02/21/2006 |
