Granted Patent
Utility
US 5,054,516 · App. 07/334,815
Automatic flow control valve
Inventor:
Charles L. Okerblom
Patented Case
View Patent ↗
Granted: Oct 8, 1991
Filed: Apr 4, 1989
Inventor
Charles L. Okerblom
Assignee (at issue)
TACO, 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.