Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5091624 | Method of flash butt welding high-carbon material, in particular nodular cast iron | Anton Alt, Ludwig Wilhelm, Urban Zimmermann | 1992-02-25 |
| 4900375 | Magnesium-treated, decarburizingly-annealed cast iron material | Anton Alt, Guenter Schulte, Ludwig Wilhelm | 1990-02-13 |
| 4881680 | Process for the production of a composite camshaft | Walter Greulich | 1989-11-21 |