Granted Patent
Utility
US 4,748,710 · App. 06/864,615
Butterfly sponge mop
Inventor:
David A. Jones
Patented Case
View Patent ↗
Granted: Jun 7, 1988
Filed: May 19, 1986
Inventor
David A. Jones
Assignee (at issue)
The Drackett Company
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.