Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D644713 | Filter | Jay Rasmussen | 2011-09-06 |
| D603427 | On-off plunger | Jay Rasmussen | 2009-11-03 |
| D603435 | Dosage piston retention clip | Jay Rasmussen | 2009-11-03 |
| D602512 | Piston assembly | Jay Rasmussen | 2009-10-20 |
| 7438537 | Liquid additive injection pump with mixing chamber and one way valve | — | 2008-10-21 |
| D573620 | Self sealing piston ring | — | 2008-07-22 |
| 7131454 | Piston sealing mechanism for liquid additive injection pump | James E. Williams | 2006-11-07 |
| D525685 | One way valve gasket | — | 2006-07-25 |
| 7032760 | Backwash flushing filter | James A. Mann, James E. Williams | 2006-04-25 |
| 7000782 | Backwash flushing filter | James A. Mann, James E. Williams | 2006-02-21 |
| 6910405 | On/off switch for liquid additive injection pump | James E. Williams | 2005-06-28 |
| 6431198 | Pumping system for the injection of measured quantities of fluid into a fluid stream | Edward Grout | 2002-08-13 |
| 6357466 | Pumping system for the injection of measured quantities of fluid into a fluid stream | Edward Grout | 2002-03-19 |
| 6254366 | Replaceable seal having a friction fit | Edward Grout, James E. Williams | 2001-07-03 |
| 5513963 | Direct action fluid motor and injection pump | — | 1996-05-07 |
| 5243897 | Magnetically actuated fluid motor | Edward Grout | 1993-09-14 |
| 5184943 | Rolling diaphragm injection pump | — | 1993-02-09 |
| 5137435 | Compression spring fluid motor | — | 1992-08-11 |
| 4809731 | Liquid injection apparatus having an external adjustor | Paul M. Perrinet | 1989-03-07 |
| 4558715 | Apparatus for injecting measured quantities of liquid into a fluid stream | Paul M. Perrinet | 1985-12-17 |