Granted Patent
Utility
US 4,817,913 · App. 07/242,549
Flushometer relief valve
Inventor:
John F. Whiteside
Patented Case
View Patent ↗
Granted: Apr 4, 1989
Filed: Sep 12, 1988
Inventor
John F. Whiteside
Assignee (at issue)
Sloan Valve Company
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.