Granted Patent
Utility
US 5,159,667 · App. 07/359,839
Document identification by characteristics matching
Inventors:
Roland G. Borrey, Daniel G. Borrey
Patented Case
View Patent ↗
Granted: Oct 27, 1992
Filed: May 31, 1989
Inventors
Roland G. Borrey
Daniel G. Borrey
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.