Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883083 | Relief valve assembly; piston member from same and filter head assembly incorporating same | Jack Stifelman, Jeff Theisen, Patrick Fisher | 1989-11-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883083 | Relief valve assembly; piston member from same and filter head assembly incorporating same | Jack Stifelman, Jeff Theisen, Patrick Fisher | 1989-11-28 |