Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6569317 | Trickle valve | Hendricus A. Dirkse, Hubertus Wilhelmus Albertus Dries | 2003-05-27 |
WR
Willem Rozema
Overall (All Time): #3,512,370 of 4,157,543Top 85%
1
Patents All Time