Granted Patent
Utility
US 6,076,220 · App. 09/208,863
Mop roller wringer locking system
Inventor:
Robert E. Petner
Patented Case
View Patent ↗
Granted: Jun 20, 2000
Filed: Dec 10, 1998
Inventor
Robert E. Petner
Assignee (at issue)
Quickie Manufacturing Corporation
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.