Granted Patent
Utility
US 6,563,285 · App. 09/888,558
Stepper motor control system
Inventors:
Thomas Jon Eade, Randall David Mayo
Patented Case
View Patent ↗
Granted: May 13, 2003
Filed: Jun 25, 2001
Inventors
Thomas Jon Eade
Randall David Mayo
Assignee (at issue)
Lexmark International, 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.