Granted Patent
Utility
US 6,450,867 · App. 09/607,246
Battery powered, riding, floor treating machine
Inventor:
Donald Joseph Legatt
Patented Case
View Patent ↗
Granted: Sep 17, 2002
Filed: Jun 30, 2000
Inventor
Donald Joseph Legatt
Assignee (at issue)
Nilfisk-Advance, 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.