Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4843698 | Process for the production of a cast piston upper part of a two-part piston | Emil Ripberger | 1989-07-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4843698 | Process for the production of a cast piston upper part of a two-part piston | Emil Ripberger | 1989-07-04 |