Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873004 | Lubricating composition | Christiaan D. M. Beverwijk, Feike De Jong | 1989-10-10 |
PS
Peter Sant
Overall (1989): #69,321 of 140,708Top 50%
1
Patents 1989