Granted Patent
Utility
US 6,381,928 · App. 09/579,684
Tamper-indicating closure and container package
Inventor:
James L. Gregory
Patented Case
View Patent ↗
Granted: May 7, 2002
Filed: May 26, 2000
Inventor
James L. Gregory
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.