Granted Patent
Utility
US 5,522,293 · App. 08/135,830
Method and apparatus for accurately positioning a knife blade for scoring plastic tamper indicating closures
Inventor:
Keith W. Ingram
Patented Case
View Patent ↗
Granted: Jun 4, 1996
Filed: Oct 14, 1993
Inventor
Keith W. Ingram
Assignee (at issue)
Owens-Illinois Closure 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.