Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857197 | Liquid separator with tangential drive fluid introduction | Grant A. Young, William D. Wakley, Steven L. Andrews | 1989-08-15 |
| 4818400 | Cyclone and filter belt apparatus for dewatering | Robert G. Russell | 1989-04-04 |