Granted Patent
Utility
US 6,442,437 · App. 09/338,230
Method for step motor control
Inventors:
Yuan-Tong Yu, John Lin
Patented Case
View Patent ↗
Granted: Aug 27, 2002
Filed: Jun 22, 1999
Inventors
Yuan-Tong Yu
John Lin
Assignee (at issue)
Mustek 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.