Granted Patent
Utility
US 5,884,355 · App. 08/767,131
Mop element for use in clean room mop
Inventor:
Joselito De Guzman
Patented Case
View Patent ↗
Granted: Mar 23, 1999
Filed: Dec 19, 1996
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.