Granted Patent
Utility
US 4,450,862 · App. 06/234,133
Pinch valve assembly
Inventor:
Thomas H. Hogan
Patented Case
View Patent ↗
Granted: May 29, 1984
Filed: Feb 13, 1981
Inventor
Thomas H. Hogan
Assignee (at issue)
Syntex (U.S.A.) 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.