Granted Patent
Utility
US 5,757,923 · App. 08/635,145
Method of generating secret identification numbers
Inventor:
Philip J. Koopman, Jr.
Patented Case
View Patent ↗
Granted: May 26, 1998
Filed: Apr 19, 1996
Inventor
Philip J. Koopman, Jr.
Assignee (at issue)
UT Automotive Dearborn, 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.