Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5498686 | Optically transparent photochromic plastic material | Erhard Effer, Manfred Melzig, Herbert Schuster | 1996-03-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5498686 | Optically transparent photochromic plastic material | Erhard Effer, Manfred Melzig, Herbert Schuster | 1996-03-12 |