Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6616964 | Method and preparation for the photochromic marking and/or for securing the authenticity of objects | Arne Seitz | 2003-09-09 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6616964 | Method and preparation for the photochromic marking and/or for securing the authenticity of objects | Arne Seitz | 2003-09-09 |