Granted Patent
Utility
US 3,960,735 · App. 05/497,699
Corrosion-inhibited polyphosphate compositions
Inventor:
Kathleen P. Lacey
Patented Case
View Patent ↗
Granted: Jun 1, 1976
Filed: Aug 15, 1974
Inventor
Kathleen P. Lacey
Assignee (at issue)
Early California Industries, 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.