Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5830833 | Synthetic ester lubricants for refrigerator systems | Hans-Dieter Grasshoff, Harald Kohnz | 1998-11-03 |
| 5049292 | Lubricant composition for refrigerator systems | Hans-Dieter Grasshoff | 1991-09-17 |