Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4562860 | Ball valve having easy maintenance features for extreme environments | John Walter, Harry E. Eminger | 1986-01-07 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4562860 | Ball valve having easy maintenance features for extreme environments | John Walter, Harry E. Eminger | 1986-01-07 |