Granted Patent
Utility
US 5,784,746 · App. 08/638,840
Abrasive mop head
Inventors:
Todd A. Williams, Richard A. Williams
Patented Case
View Patent ↗
Granted: Jul 28, 1998
Filed: Apr 29, 1996
Inventors
Todd A. Williams
Richard A. Williams
Assignee (at issue)
Economics in Technology
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.