Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849103 | Filter apparatus for the uniform filtration of plastic melts | Robert Schmidt | 1989-07-18 |
| 4803027 | Process for the production of biaxially stretched films and apparatus for implementation of the process | Guenther Crass, Wolfgang Dietz, Gunter Schloegl | 1989-02-07 |