Granted Patent
Utility
US 6,555,987 · App. 09/903,887
Step motor control for accommodating friction load variation
Inventor:
Albert C. Leenhouts
Patented Case
View Patent ↗
Granted: Apr 29, 2003
Filed: Jul 12, 2001
Inventor
Albert C. Leenhouts
Assignee (at issue)
Seiberco Incorporated
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.