Issued Patents 1997
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5692397 | Air separation | — | 1997-12-02 |
| 5692398 | Production of argon | — | 1997-12-02 |
| 5689975 | Air separation | John Oakey | 1997-11-25 |
| 5660059 | Air separation | — | 1997-08-26 |
| 5657644 | Air separation | John Oakey | 1997-08-19 |