Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889182 | Heat exchanger | — | 1989-12-26 |
PK
Peter Hubertus Kösters
Overall (1989): #69,668 of 140,708Top 50%
1
Patents 1989