Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4356084 | Self-sealing valve assembly to facilitate unplugging of a centrifugal cleaner | Derald R. Hatton | 1982-10-26 |
| 4328096 | Dual flow screening apparatus | Peter Seifert | 1982-05-04 |