Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4755401 | Artificial turf with playing field markings | Hans-Joachim Friedrich | 1988-07-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4755401 | Artificial turf with playing field markings | Hans-Joachim Friedrich | 1988-07-05 |