Granted Patent
Utility
US 5,431,305 · App. 08/228,049
Tamper evident liquid dispensing package
Inventor:
Ronald S. Kaminski
Patented Case
View Patent ↗
Granted: Jul 11, 1995
Filed: Apr 15, 1994
Inventor
Ronald S. Kaminski
Assignee (at issue)
Owens-Illinois Plastic Products 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.