Granted Patent
Utility
US 5,013,007 · App. 07/408,367
Flush valve refill ring
Inventor:
John F. Whiteside
Patented Case
View Patent ↗
Granted: May 7, 1991
Filed: Sep 18, 1989
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.