Granted Patent
Utility
US 5,490,659 · App. 08/358,270
Reinforced diaphragm for flush valves
Inventor:
John F. Whiteside
Patented Case
View Patent ↗
Granted: Feb 13, 1996
Filed: Dec 19, 1994
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.