Granted Patent
Utility
US 5,111,961 · App. 07/625,025
Cup lid
Inventor:
Hubert Van Melle
Patented Case
View Patent ↗
Granted: May 12, 1992
Filed: Dec 10, 1990
Inventor
Hubert Van Melle
Assignee (at issue)
AMHIL ENTERPRISES
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.