Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872915 | Orthorhombic lead chromate pigments of greenish hue | Leonardus Johannes Hubertus Erkens, Jacobus-Michiel-Hubertus Snijders, Herman J. J. M. Geurts, Andre Pugin | 1989-10-10 |