Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| H826 | Lubricant compositions containing a viscosity index improver having | Carl L. Willis | 1990-10-02 |
| H815 | Lubricant composition containing a viscosity index improver having | Carl L. Willis | 1990-09-04 |