Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863694 | Chemically sensitive component | Bernhard Montag, Walter Gumbrecht | 1989-09-05 |
| 4752447 | Optical filter with reversible color change | Bernhard Montag, Walter Gumbrecht | 1988-06-21 |