Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5034675 | Polyphase machine fed by a pulse-controlled a.c. converter | Bernhard Piepenbreier, Hans-Juergen Toelle | 1991-07-23 |
| 4906911 | Electrical machine driven by a pulse-controlled a.c. converter | Bernhard Piepenbreier, Hans-Juergen Toelle | 1990-03-06 |
| 4890181 | Short-circuit protection device for an electrical machine fed by a pulse-controlled A.C. converter | Bernhard Piepenbreier, Hans-Juergen Toelle | 1989-12-26 |