Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857153 | Process for the production of porous electrodes | Jiri Divisek | 1989-08-15 |
| 4827677 | Method for grinding plane-parallel circular annular faces on disk-shaped workpieces | — | 1989-05-09 |
| 4811523 | Apparatus for fine machining of plane surfaces of disk-shaped workpieces having an unmachined bearing side and a slight wall thickness | Johann Konken | 1989-03-14 |