Granted Patent
Utility
US 5,937,475 · App. 08/743,844
Water extraction cleaning machine with variable solution mixing valve
Inventors:
Timothy E. Kasen, Charles A. Reed, Jr.
Patented Case
View Patent ↗
Granted: Aug 17, 1999
Filed: Nov 5, 1996
Inventors
Timothy E. Kasen
Charles A. Reed, Jr.
Assignee (at issue)
BISSELL 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.