Granted Patent
Utility
US 6,211,642 · App. 09/356,785
Open-loop step motor control system
Inventor:
Charles R. Holdaway
Patented Case
View Patent ↗
Granted: Apr 3, 2001
Filed: Jul 20, 1999
Inventor
Charles R. Holdaway
Assignee (at issue)
Alaris Medical 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.