Granted Patent
Utility
US 5,663,003 · App. 08/644,207
(Meth)acrylated, aromatic polyester/highly ethoxylated (meth)acrylate blend floor covering wear layer
Inventors:
Wendell A. Ehrhart, Songvit Setthachayanon
Patented Case
View Patent ↗
Granted: Sep 2, 1997
Filed: May 10, 1996
Inventors
Wendell A. Ehrhart
Songvit Setthachayanon
Assignee (at issue)
ARMSTRONG WORLD 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.