Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5674417 | Method and apparatus for welding shut a gas passage in vessels | Kenneth J. Clark | 1997-10-07 |
| 5424509 | Method and apparatus for welding shut a gas passage in vessels | Kenneth J. Clark, Marcus T. Clark | 1995-06-13 |