Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6776964 | Sealing mat for closing reaction tubes | Ronald Josephus Clemens Wijnschenk, Cornelis Johannes Verton | 2004-08-17 |
| 6270728 | Test tube with optically readable coding | Ronald Josephus Clemens Wijnschenk | 2001-08-07 |