Granted Patent
Utility
US 5,628,461 · App. 08/459,697
Two piece fluid spinner and control valve for trigger sprayer
Inventors:
Donald D. Foster, Philip L. Nelson
Patented Case
View Patent ↗
Granted: May 13, 1997
Filed: Jun 2, 1995
Inventors
Donald D. Foster
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.