Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4342817 | Mask for structuring surface areas, and method of making it | Harald Bohlen, Helmut Engelke, Peter Nehmiz | 1982-08-03 |
| 4334156 | Method of shadow printing exposure | Harald Bohlen, Helmut Engelke, Werner Kulcke, Peter Nehmiz | 1982-06-08 |