Granted Patent
Utility
US 4,461,802 · App. 06/453,741
Bow and skew resistant plain-weave polyolefin
Inventor:
Robert C. Lausch
Patented Case
View Patent ↗
Granted: Jul 24, 1984
Filed: Dec 27, 1982
Inventor
Robert C. Lausch
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.