Granted Patent
Utility
US 4,969,598 · App. 07/397,110
Valve control
Inventor:
Charles Alexander Garris, III
Patented Case
View Patent ↗
Granted: Nov 13, 1990
Filed: Aug 22, 1989
Inventor
Charles Alexander Garris, III
Assignee (at issue)
Memry Plumbing Products Corp.
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.