Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4852595 | Machine for etching objects | Dietfried Baier, Ivan Grasa | 1989-08-01 |
| 4852804 | Machine for treating objects with a treating liquid | Dietfried Baier, Ivan Grasa | 1989-08-01 |
| 4806192 | Method for etching materials | — | 1989-02-21 |