Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6971652 | Connecting mechanism for pivotally connecting a shoe to a sporting device | Maarten Bobbert, Gerrit de Groot, Johannes Hendricus Petrus Houdjik, Jacobus de Koning, Hans Meester | 2005-12-06 |
| 5036843 | Breathing valve | — | 1991-08-06 |