Granted Patent
Utility
US 4,976,137 · App. 07/294,290
Chemical mixing and dispensing system
Inventors:
James D. Decker, Wendell D. Burch, Daniel F. Brady, Gary W. Hinzman, Edward P. Kromrey, Katherine M. Sanville, Donald R. Southworth, Mark S. Chace, Perry M. Peloquin
Patented Case
View Patent ↗
Granted: Dec 11, 1990
Filed: Jan 6, 1989
Inventors
James D. Decker
Wendell D. Burch
Daniel F. Brady
Gary W. Hinzman
Edward P. Kromrey
Katherine M. Sanville
Donald R. Southworth
Mark S. Chace
Perry M. Peloquin
Assignee (at issue)
ECOLAB 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.