Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5678827 | Tank car manway gasket | Daniel T. Stevenson | 1997-10-21 |
| 5622117 | Hatch cover having a removable gasket | Brian Walker | 1997-04-22 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5678827 | Tank car manway gasket | Daniel T. Stevenson | 1997-10-21 |
| 5622117 | Hatch cover having a removable gasket | Brian Walker | 1997-04-22 |