Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4862694 | Cryogenic refrigeration apparatus | James Alan Crunkleton | 1989-09-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4862694 | Cryogenic refrigeration apparatus | James Alan Crunkleton | 1989-09-05 |