Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876801 | Method and means for drying bulk goods | Johann Gehring | 1989-10-31 |
| 4812200 | Method for generating resist structures | Recai Sezi, Hans-Dieter Feucht, Rainer Leuschner | 1989-03-14 |
| 4803811 | Lapping device for surface enhancement of bulk material | Johann Gehring | 1989-02-14 |