Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| PP6291 | Chrysanthemum plant named Harlekijn | Jacques C. M. van der Knaap | 1988-09-13 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| PP6291 | Chrysanthemum plant named Harlekijn | Jacques C. M. van der Knaap | 1988-09-13 |