Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5688846 | Spiro-pyranic compounds endowed with photochromic characteristics | Pietro Allegrini, Vincenzo Malatesta, Luciana Crisci | 1997-11-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5688846 | Spiro-pyranic compounds endowed with photochromic characteristics | Pietro Allegrini, Vincenzo Malatesta, Luciana Crisci | 1997-11-18 |