Granted Patent
Utility
US 5,945,800 · App. 09/013,227
Apparatus and method for controlling a stepping motor
Inventor:
Tsu-Hsing Chen
Patented Case
View Patent ↗
Granted: Aug 31, 1999
Filed: Jan 26, 1998
Inventor
Tsu-Hsing Chen
Assignee (at issue)
Umax Data Systems, Inc.
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.