Granted Patent
Utility
US 5,373,991 · App. 08/045,631
Foamer trigger dispenser with sealing device
Inventor:
Philip L. Nelson
Patented Case
View Patent ↗
Granted: Dec 20, 1994
Filed: Apr 9, 1993
Inventor
Philip L. Nelson
Assignee (at issue)
Contico International, LLC
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.