Granted Patent
Utility
US 6,158,081 · App. 09/139,963
Water extraction cleaning machine with variable solution mixing valve
Inventors:
Timothy E. Kasen, Charles A. Reed, Jr., Eric C. Huffman
Patented Case
View Patent ↗
Granted: Dec 12, 2000
Filed: Aug 25, 1998
Inventors
Timothy E. Kasen
Charles A. Reed, Jr.
Eric C. Huffman
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.