Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6655409 | Combined stop and control valve for supplying steam | John Howard Steenburgh, Roger Bennett Clark | 2003-12-02 |
NP
Nicholas D. Porteous
Overall (All Time): #3,529,976 of 4,157,543Top 85%
1
Patents All Time