Granted Patent
Utility
US 4,550,842 · App. 06/453,215
Flexible plastic sterile closure system for containers
Inventor:
Robert Cummings
Patented Case
View Patent ↗
Granted: Nov 5, 1985
Filed: Dec 27, 1982
Inventor
Robert Cummings
Assignee (at issue)
U.S. Clinical Products, 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.