Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816938 | Process for determining data disk track centers | Stephen Cowen, James S. Toreson, Joseph Yongxiang Chen | 1989-03-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816938 | Process for determining data disk track centers | Stephen Cowen, James S. Toreson, Joseph Yongxiang Chen | 1989-03-28 |