Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5445834 | Green chewing gum base | Petrus J. J. M. Sijtsema, Jan D. Lakeman, Frederick William Cain | 1995-08-29 |
| 5417988 | Green chewing gum base | Petrus J. J. M. Sijtsema, Jan D. Lakeman, Frederick William Cain | 1995-05-23 |