Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861524 | Apparatus for producing a gas mixture by the saturation method | Gunter Sielaff, Frank Joseph | 1989-08-29 |
NH
Norbert Harder
Overall (1989): #138,385 of 140,708Top 100%
1
Patents 1989