Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4528469 | Compact A.C. machine having plural ventilation ducts | Herbert Prenner, Urban Ulrich, Max Voser | 1985-07-09 |
| 4308477 | Starting resistance for a rotating electrical machine | Urban Ulrich | 1981-12-29 |