Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6939590 | Paperboard tube structures with one or more cut-and-folded plies | Wim van de Camp | 2005-09-06 |
| 6851643 | Spirally wound tube with enhanced inner diameter stiffness, and method of making same | Yanping Qiu, Johannes Wilhelmus van de Camp, Mark Burns, Cliff Bellum | 2005-02-08 |