Granted Patent
Utility
US 4,444,332 · App. 06/292,939
Container and closure having integral sealing means
Inventors:
Sune Widen, Borge Jensen, Lars Bjork
Patented Case
View Patent ↗
Granted: Apr 24, 1984
Filed: Aug 14, 1981
Inventors
Sune Widen
Borge Jensen
Lars Bjork
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.