Granted Patent
Utility
US 4,518,096 · App. 06/494,048
Drink-through container lid with removable drink-through section
Inventor:
Thomas W. Winstead
Patented Case
View Patent ↗
Granted: May 21, 1985
Filed: May 12, 1983
Inventor
Thomas W. Winstead
Assignee (at issue)
Maryland Cup Corporation
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.