Granted Patent
Utility
US 4,569,438 · App. 06/697,993
Container having fluid-tight seal
Inventor:
Robert J. Sheffler
Patented Case
View Patent ↗
Granted: Feb 11, 1986
Filed: Feb 4, 1985
Inventor
Robert J. Sheffler
Assignee (at issue)
Revlon
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.