Granted Patent
Utility
US 4,475,957 · App. 06/542,860
Coating composition
Inventor:
Lothar S. Sander
Patented Case
View Patent ↗
Granted: Oct 9, 1984
Filed: Oct 17, 1983
Inventor
Lothar S. Sander
Assignee (at issue)
Amchem Products, 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.