Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888033 | Method of manufacturing permeable mineral membranes | Jean Charpin, Francis Pejot, Pierre Plurien, Bernard Rasneur, Serge Richard +1 more | 1989-12-19 |
AG
Andre Grangeon
Overall (1989): #132,071 of 140,708Top 95%
1
Patents 1989