Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4233926 | Flange valve having improved sealing characteristics and wear indicator | Claude E. Parkin | 1980-11-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4233926 | Flange valve having improved sealing characteristics and wear indicator | Claude E. Parkin | 1980-11-18 |