Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869209 | Soot chaser | — | 1989-09-26 |
| 4804429 | Method of forming a floor tile on a drum | F. Joseph Appleyard, William L. Mason | 1989-02-14 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869209 | Soot chaser | — | 1989-09-26 |
| 4804429 | Method of forming a floor tile on a drum | F. Joseph Appleyard, William L. Mason | 1989-02-14 |