Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6997444 | Radial disc impeller apparatus and method | Ronald J. Weetman, Richard Howk | 2006-02-14 |
| 6896246 | Aeration apparatus and method | Ronald J. Weetman, Richard Howk | 2005-05-24 |