Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857189 | Filter cartridge with a lugged concentric closure portion | Jack W. Thomsen, John W. Tadlock | 1989-08-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857189 | Filter cartridge with a lugged concentric closure portion | Jack W. Thomsen, John W. Tadlock | 1989-08-15 |