Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4803143 | Colored single-component toners and their preparation | Werner Ostertag, Erwin Czech, Detlef Schulze-Hagenest | 1989-02-07 |
FS
Franz-Ulrich Schmitt
Overall (1989): #114,069 of 140,708Top 85%
1
Patents 1989