Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4389430 | Method and arrangement for coating orifice walls | Renate Rettich | 1983-06-21 |
| 4243698 | Method for producing a pigment coating | Otto Marzel, Alfred Joachim Wilhelm | 1981-01-06 |