Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D304986 | Combined bracket and trash bag support for a post-mounted tray | — | 1989-12-12 |
| 4816233 | Ion exchange method for the recovery of scandium | Wen-Chao Lai, Samuel Natansohn | 1989-03-28 |