Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851880 | Cleaning apparatus having airfoils | Francisco L. Ziegelmuller | 1989-07-25 |
| 4827311 | Apparatus for cleaning particulate matter from a moving web | Robert M. Peffer, Curtis L. Vernon | 1989-05-02 |