Granted Patent
Utility
US 6,820,301 · App. 10/140,465
Cleaning implement with removable cleaning element
Inventor:
Robert E. Petner
Patented Case
View Patent ↗
Granted: Nov 23, 2004
Filed: May 7, 2002
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.