Granted Patent
Utility
US 6,629,332 · App. 09/957,711
Floor cleaning device with a recovery tank
Inventors:
Jeffery A. Morgan, Charles A. Lang, David G. Mueller, Kenneth H. Cooper, Richard F. Spinelli, Hung Kwong, Kam Hoi Ma
Patented Case
View Patent ↗
Granted: Oct 7, 2003
Filed: Sep 18, 2001
Inventors
Jeffery A. Morgan
Charles A. Lang
David G. Mueller
Kenneth H. Cooper
Richard F. Spinelli
Hung Kwong
Kam Hoi Ma
Assignee (at issue)
Hoover Limited
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.