Granted Patent
Utility
US 4,858,644 · App. 07/200,138
Fluid flow regulator
Inventor:
Kenneth L. Decker
Patented Case
View Patent ↗
Granted: Aug 22, 1989
Filed: May 31, 1988
Inventor
Kenneth L. Decker
Assignee (at issue)
Otis Engineering Corporation
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.