Granted Patent
Utility
US 6,671,925 · App. 10/152,537
Chemical dispenser for a hard floor surface cleaner
Inventors:
Bruce F. Field, Joseph K. Krueger, Daniel L. Joynt, Joseph Pouliot, Daniel J. McHugh
Patented Case
View Patent ↗
Granted: Jan 6, 2004
Filed: May 21, 2002
Inventors
Bruce F. Field
Joseph K. Krueger
Daniel L. Joynt
Joseph Pouliot
Daniel J. McHugh
Assignee (at issue)
TENNANT COMPANY
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.