Granted Patent
Utility
US 5,453,131 · App. 08/265,493
Multiple protocol multiple pump liquid chemical dispenser
Inventors:
Wai Yin Cedric Chan, James W. Livingston
Patented Case
View Patent ↗
Granted: Sep 26, 1995
Filed: Jun 23, 1994
Inventors
Wai Yin Cedric Chan
James W. Livingston
Assignee (at issue)
DIVERSEY, 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.