Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853170 | Process for producing press molded articles provided with channels from powdery molding compounds | Eugen Buhler, Karl Schwarzmeier | 1989-08-01 |
| 4812434 | Exhaust gas catalysts and process for the production thereof | Hans-Jurgen Pohlmann | 1989-03-14 |