Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D334360 | Tire tread and buttress | Maurice Graas | 1993-03-30 |
| 5135038 | Tire treads | Maurice Graas | 1992-08-04 |
HW
Hendrikus J. L. M. De Wit
Overall (All Time): #2,300,884 of 4,157,543Top 60%
2
Patents All Time