Granted Patent
Utility
US 4,449,984 · App. 06/391,914
Container having an air tight seal
Inventor:
Exequiel D. Cruz
Patented Case
View Patent ↗
Granted: May 22, 1984
Filed: Jun 24, 1982
Inventor
Exequiel D. Cruz
Assignee (at issue)
Respiratory Care, 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.