Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4833387 | Control circuit for running a polyphase synchronous motor in a d-c voltage network | — | 1989-05-23 |
RP
Ruediger Pfeiffer
Overall (1989): #60,033 of 140,708Top 45%
1
Patents 1989