Granted Patent
Utility
US 5,974,621 · App. 09/030,675
Mop wringer with mop handle support
Inventor:
Joseph M. Wilen
Patented Case
View Patent ↗
Granted: Nov 2, 1999
Filed: Feb 25, 1998
Inventor
Joseph M. Wilen
Assignee (at issue)
Wilen Products, Inc.
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.