Granted Patent
Utility
US 5,158,499 · App. 07/720,121
Laser scoring of packaging substrates
Inventor:
Anthony C. Guckenberger
Patented Case
View Patent ↗
Granted: Oct 27, 1992
Filed: Jul 1, 1991
Inventor
Anthony C. Guckenberger
Assignee (at issue)
American National Can 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.