Granted Patent
Utility
US 4,584,505 · App. 06/620,586
Torque-speed control system for asynchronous D.C. brushless motor
Inventors:
Yeongchoon Chung, Myunghwan Kim
Patented Case
View Patent ↗
Granted: Apr 22, 1986
Filed: Jun 14, 1984
Inventors
Yeongchoon Chung
Myunghwan Kim
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.