Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6217755 | In-tank fluid filter with valve assembly | Johan Fobe, Angelo Schiavon, Enrico Greco | 2001-04-17 |
| 6024869 | Spin-on filter assembly with valve arrangements | — | 2000-02-15 |
| 5104537 | High pressure hydraulic spin-on filter | Jeff Theisen | 1992-04-14 |
| 4883083 | Relief valve assembly; piston member from same and filter head assembly incorporating same | John F. Connelly, Jeff Theisen, Patrick Fisher | 1989-11-28 |
| 4743374 | High-strength filter with improved fatigue rating | — | 1988-05-10 |
| 4615800 | Duplex filter apparatus | Patrick Fisher, John F. Connelly | 1986-10-07 |
| 4480160 | Differential pressure switch | — | 1984-10-30 |
| 4369113 | High strength spin-on filter | — | 1983-01-18 |