Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5736229 | Single-layered paper product | — | 1998-04-07 |
| 5736230 | Single layered paper product | — | 1998-04-07 |
| 5639561 | Single-layered paper product | — | 1997-06-17 |
| 5153168 | Self-duplicating paper product | Rolf Waible | 1992-10-06 |