Granted Patent
Utility
US 4,465,205 · App. 06/552,853
Fragile opening means for a container lid
Inventor:
Brian Leo Chudleigh Sutch
Patented Case
View Patent ↗
Granted: Aug 14, 1984
Filed: Nov 17, 1983
Inventor
Brian Leo Chudleigh Sutch
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.