Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886089 | Gas venting valve for liquid tank | Zdenek Gabrlik, John Michael Morris | 1989-12-12 |
| 4878513 | Quick vent valve for air brake line | David P. Ashby | 1989-11-07 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886089 | Gas venting valve for liquid tank | Zdenek Gabrlik, John Michael Morris | 1989-12-12 |
| 4878513 | Quick vent valve for air brake line | David P. Ashby | 1989-11-07 |