Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4797601 | Abutment force adjustable windshield wiper arrangement | Erich Ditzer | 1989-01-10 |
LH
Ludwig Hasenknopf
Overall (1989): #32,202 of 140,708Top 25%
1
Patents 1989