Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4848379 | Apparatus for and method of cleaning rotating parts of plastics processing machines | — | 1989-07-18 |
| 4826948 | Impregnating agent and its use | Bernhard Jansen, Hanns P. Muller, Roland Richter, Dietmar Schapel | 1989-05-02 |
| 4823819 | Apparatus for removing residues from parts of plastics processing machines | — | 1989-04-25 |
| 4810536 | Method of impregnating | Bernhard Jansen, Hanns P. Muller, Roland Richter, Dietmar Schapel | 1989-03-07 |