Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872908 | Metal treatment | Andrew James Hobbis, Ronald E. Tapping | 1989-10-10 |
| 4858674 | Casting aluminium alloys | — | 1989-08-22 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872908 | Metal treatment | Andrew James Hobbis, Ronald E. Tapping | 1989-10-10 |
| 4858674 | Casting aluminium alloys | — | 1989-08-22 |