Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885266 | Zirconia ceramic materials and method for making same | Robert R. Hughan, Richard H. J. Hannink, Michael Vincent Swain, Robert K. Stringer, Ronald C. Garvie | 1989-12-05 |