Granted Patent
Utility
US 6,548,977 · App. 09/904,000
Motor tracking control system
Inventors:
Hung D. Vu, Ralph W. Horber
Patented Case
View Patent ↗
Granted: Apr 15, 2003
Filed: Jul 12, 2001
Inventors
Hung D. Vu
Ralph W. Horber
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.