Granted Patent
Utility
US 5,897,019 · App. 08/647,422
Frustroconical beverage cup and fitted lid
Inventor:
Scott E. Stropkay
Patented Case
View Patent ↗
Granted: Apr 27, 1999
Filed: May 13, 1996
Inventor
Scott E. Stropkay
Assignee (at issue)
Dunkin' Donuts Incorporated
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.