Granted Patent
Utility
US 5,816,503 · App. 08/335,496
Foam trigger dispenser with sealing device and locking means
Inventor:
Philip L. Nelson
Patented Case
View Patent ↗
Granted: Oct 6, 1998
Filed: Nov 7, 1994
Inventor
Philip L. Nelson
Assignee (at issue)
Continental Sprayers International, 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.