Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5249490 | Adjustable hexagonal wrench | — | 1993-10-05 |
| 4853115 | Rake classifier | Matthew J. Rollberg | 1989-08-01 |
| 4462909 | Surface skimmer means for settling tank | — | 1984-07-31 |
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5249490 | Adjustable hexagonal wrench | — | 1993-10-05 |
| 4853115 | Rake classifier | Matthew J. Rollberg | 1989-08-01 |
| 4462909 | Surface skimmer means for settling tank | — | 1984-07-31 |