Granted Patent
Utility
US 5,335,812 · App. 08/143,014
Drinking vessel lid having a defined straw puncturable area
Inventor:
Peter K. Boller
Patented Case
View Patent ↗
Granted: Aug 9, 1994
Filed: Oct 29, 1993
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.