Granted Patent
Utility
US 5,931,352 · App. 08/927,345
Snap-fit non-drip valve and method for assembly thereof
Inventor:
Mark S. Dirr
Patented Case
View Patent ↗
Granted: Aug 3, 1999
Filed: Sep 11, 1997
Inventor
Mark S. Dirr
Assignee (at issue)
Knight Plastics, 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.