Granted Patent
Utility
US 6,763,544 · App. 09/934,146
Apparatus for treating a floor surface
Inventor:
William Randall Stuchlik
Patented Case
View Patent ↗
Granted: Jul 20, 2004
Filed: Aug 21, 2001
Inventor
William Randall Stuchlik
Assignee (at issue)
Alto U.S. 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.