Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5696584 | Phase grating having an unprotected relief structure with a grating structure that causes destructive interference of reflections | Walter Huber | 1997-12-09 |
| 5631736 | Absolute interferometer measuring process and apparatus having a measuring interferometer, control interferometer and tunable laser | Jurgen Thiel, Dieter Michel | 1997-05-20 |
| 5620116 | Rotary vane gate | Wolfgang Kluger, Klaus Schwab, Dieter Quittek, Bernd Kollner | 1997-04-15 |
| 5609761 | Filter medium and process for making same | — | 1997-03-11 |