Granted Patent
Utility
US 4,946,451 · App. 06/825,840
Liquid valve system
Inventor:
James P. Cianci
Patented Case
View Patent ↗
Granted: Aug 7, 1990
Filed: Feb 4, 1986
Inventor
James P. Cianci
Assignee (at issue)
The Kendall Company LP
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.