Issued Patents 2023
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11850655 | Process and device for manufacturing hollow, internally cooled valves | ANTONIUS WOLKING, GUIDO BAYARD | 2023-12-26 |
| 11813658 | Method for producing a hollow valve for internal combustion engines | ANTONIUS WOLKING, Johannes Knust | 2023-11-14 |
| 11654471 | Method for producing a hollow valve for internal combustion engines | ANTONIUS WOLKING, GUIDO BAYARD | 2023-05-23 |