Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5674820 | Additive compositions for lubricants and functional fluids | John S. Manka, William D. Abraham, Stephen H. Roby, James A. Supp | 1997-10-07 |
| 5620948 | Additive combinations for lubricants and functional fluids | — | 1997-04-15 |