Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889702 | Process for removing metallic constituents from dust obtained during the electrothermal production of yellow phosphorus | Klaus Jodden | 1989-12-26 |
FK
Friedrich Kolkmann
Overall (1989): #114,595 of 140,708Top 85%
1
Patents 1989