Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842655 | Process for improving resistance of metal bodies to stress corrosion cracking | Jan S. Porowski, William J. O'Donnell, Edward J. Hampton | 1989-06-27 |
| 4817441 | Process and apparatus for obtaining a gas sample | Jan S. Porowski, Edward J. Hampton, William J. O'Donnell | 1989-04-04 |