Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4747859 | Air separation | David C. F. Gladman | 1988-05-31 |
| 4638638 | Refrigeration method and apparatus | John Marshall | 1987-01-27 |
| 4638639 | Gas refrigeration method and apparatus | John Marshall | 1987-01-27 |