Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5687754 | Automatic drain valve with internal pressure booster valve | William S. Stumphauzer, Hugh F. Groth | 1997-11-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5687754 | Automatic drain valve with internal pressure booster valve | William S. Stumphauzer, Hugh F. Groth | 1997-11-18 |