Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6580469 | Projection device | Gerd Rieche, Dietrich Schmidt, Hans-Juergen Meissner, Hans-Joachim Stoehr, Eberhard Piehler +1 more | 2003-06-17 |
| 5835252 | Device for generating annular pictures | Ludwig Meier | 1998-11-10 |
| 4776666 | Projector for projecting fixed star | Gebhard Kuehn, Klaus-Dieter Scharf, Ludwig Meier | 1988-10-11 |