Granted Patent
Utility
US 5,239,177 · App. 07/804,870
"Angular position and rotational velocity detection using ""perfect words"""
Inventor:
John F. Cunniff
Patented Case
View Patent ↗
Granted: Aug 24, 1993
Filed: Dec 6, 1991
Inventor
John F. Cunniff
Assignee (at issue)
Hughes Aircraft Company
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.