Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4801839 | Mounting of a cold cathode directly to a vacuum chamber wall | George J. Collins, Zeng-qi Yu | 1989-01-31 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4801839 | Mounting of a cold cathode directly to a vacuum chamber wall | George J. Collins, Zeng-qi Yu | 1989-01-31 |