Granted Patent
Utility
US 6,446,302 · App. 09/593,126
Extraction cleaning machine with cleaning control
Inventors:
Gary A. Kasper, Samuel Hansen, Jonathan L. Miner, David E. McDowell
Patented Case
View Patent ↗
Granted: Sep 10, 2002
Filed: Jun 13, 2000
Inventors
Gary A. Kasper
Samuel Hansen
Jonathan L. Miner
David E. McDowell
Assignee (at issue)
BISSELL Homecare, 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.