Granted Patent
Utility
US 5,881,993 · App. 08/937,881
Flushometer piston
Inventors:
John R. Wilson, Daniel J. Carroll
Patented Case
View Patent ↗
Granted: Mar 16, 1999
Filed: Sep 25, 1997
Inventors
John R. Wilson
Daniel J. Carroll
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.