Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885082 | Multiple lubricating oil filter for internal combustion engines, with a member for monitoring the degree of clogging of the filtration surface | — | 1989-12-05 |
| 4841919 | Fuel feed device, particularly for internal combustion engines, comprising fuel filtering and emulsifying members | — | 1989-06-27 |