Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844799 | Filtration apparatus having spaced-apart driving members for changing a size of a treatment zone | — | 1989-07-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844799 | Filtration apparatus having spaced-apart driving members for changing a size of a treatment zone | — | 1989-07-04 |