Granted Patent
Utility
US 5,183,172 · App. 07/855,823
Drink through container lid
Inventor:
Peter K. Boller
Patented Case
View Patent ↗
Granted: Feb 2, 1993
Filed: Mar 23, 1992
Inventor
Peter K. Boller
Assignee (at issue)
Lily Cups 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.