Granted Patent
Utility
US 5,473,621 · App. 07/869,983
Rotationally invariant coding
Inventor:
Lee-Fang Wei
Patented Case
View Patent ↗
Granted: Dec 5, 1995
Filed: Apr 16, 1992
Inventor
Lee-Fang Wei
Assignee (at issue)
AT&T CORP.
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.