Granted Patent
Utility
US 6,298,517 · App. 09/094,551
Cleaning tool with removable cleaning sheets
Inventor:
William D. McKay
Patented Case
View Patent ↗
Granted: Oct 9, 2001
Filed: Jun 12, 1998
Inventor
William D. McKay
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.