Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5249754 | Method of and arrangement for gripping starting portion of coiled film | Traugott Liermann, Jurgen Risser | 1993-10-05 |
| 5003343 | Projection copying apparatus and projection screen therefor | Hubert Hackenberg, Traugott Liermann, Herbert Plaschke, Hans-Joachim Schrecke | 1991-03-26 |