Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841948 | Concave gase tissue expander | William Dubrul, Tor E. Allen | 1989-06-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841948 | Concave gase tissue expander | William Dubrul, Tor E. Allen | 1989-06-27 |