Granted Patent
Utility
US 6,141,813 · App. 08/993,200
Self-wringing mop and wringer assembly, cleaning element assembly and cleaning element for use with same
Inventor:
Joselito De Guzman
Patented Case
View Patent ↗
Granted: Nov 7, 2000
Filed: Dec 18, 1997
Inventor
Joselito De Guzman
Assignee (at issue)
MICRONOVA MANUFACTURING, 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.