Granted Patent
Utility
US 6,089,397 · App. 09/288,629
Cup lid having improved drink-through opening
Inventor:
Hugh Van Melle
Patented Case
View Patent ↗
Granted: Jul 18, 2000
Filed: Apr 9, 1999
Inventor
Hugh 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.