Granted Patent
Utility
US 5,887,848 · App. 08/932,656
Flush valve bypass and filter
Inventor:
John R. Wilson
Patented Case
View Patent ↗
Granted: Mar 30, 1999
Filed: Sep 18, 1997
Inventor
John R. Wilson
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.