Granted Patent
Utility
US 4,699,728 · App. 06/868,425
Aqueous acidic composition for cleaning fiberglass
Inventors:
Terri L. Riehm, Robert T. Hall, II
Patented Case
View Patent ↗
Granted: Oct 13, 1987
Filed: May 29, 1986
Inventors
Terri L. Riehm
Robert T. Hall, II
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.