Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867111 | Arrangement for the actuation of a gas-exchange disk valve | Klaus Schneider, Van-Khanh Tran | 1989-09-19 |
HE
Hans-Joachim Esch
Overall (1989): #108,804 of 140,708Top 80%
1
Patents 1989