Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5951878 | Method and apparatus for cleaning filter material in a filter apparatus utilizing a suction generating nozzle | — | 1999-09-14 |
| 5876612 | Method and apparatus for cleaning filter material in a filter apparatus | — | 1999-03-02 |
| 4695376 | Floating decanter | Ronald J. Weis, Wesley M. Shubert | 1987-09-22 |
| 4540487 | Filter apparatus | John K. Johnson, Jack R. Earhart, Mark A. Herbig | 1985-09-10 |
| 4454034 | Filter apparatus | Mark A. Herbig | 1984-06-12 |