Granted Patent
Utility
US 5,115,950 · App. 07/640,640
Dispensing closure with unitary structure for retaining a pressure-actuated flexible valve
Inventor:
Robert D. Rohr
Patented Case
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Granted: May 26, 1992
Filed: Jan 14, 1991
Inventor
Robert D. Rohr
Assignee (at issue)
Seaquist Closures, a division of Pittway Corp.
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.