Granted Patent
Utility
US 4,725,376 · App. 06/855,111
Method of making solid cast alkaline detergent composition
Inventor:
James L. Copeland
Patented Case
View Patent ↗
Granted: Feb 16, 1988
Filed: Apr 23, 1986
Inventor
James L. Copeland
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.