Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4833311 | Security markings, material provided with security marks, and apparatus to detect the security mark | — | 1989-05-23 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4833311 | Security markings, material provided with security marks, and apparatus to detect the security mark | — | 1989-05-23 |