Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6022427 | Method for producing helical springs | Josef Wienand | 2000-02-08 |
| 5061829 | Composite conductor rail of aluminum and steel, in particular high-performance railway conductor rail | — | 1991-10-29 |
| 4982497 | Process for manufacture of a superconductor | — | 1991-01-08 |
| 4744512 | Composite section, in particular composite conductor rail | — | 1988-05-17 |