Granted Patent
Utility
US 5,301,131 · App. 07/975,476
Apparatus and method for controlling the rotational speed of a motor
Inventor:
Chang-Gyun Kim
Patented Case
View Patent ↗
Granted: Apr 5, 1994
Filed: Nov 12, 1992
Inventor
Chang-Gyun Kim
Assignee (at issue)
Daewoo Electronics Corporation
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.