Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4239183 | Handle assembly for bottom outlet valve | Richard J. Wempe | 1980-12-16 |
| 4221358 | Positive clapper outlet valve | Richard J. Wempe | 1980-09-09 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4239183 | Handle assembly for bottom outlet valve | Richard J. Wempe | 1980-12-16 |
| 4221358 | Positive clapper outlet valve | Richard J. Wempe | 1980-09-09 |