Granted Patent
Utility
US 6,789,290 · App. 09/898,584
Dual mode carpet cleaning device
Inventors:
Roger Kent, Frank Stephan, Schubert Pereira
Patented Case
View Patent ↗
Granted: Sep 14, 2004
Filed: Jul 2, 2001
Inventors
Roger Kent
Frank Stephan
Schubert Pereira
Assignee (at issue)
Rug Doctor, L.P.
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.