Granted Patent
Utility
US 5,482,551 · App. 08/319,195
Extruded fire resistant construction and building products
Inventors:
Debra L. Morris, Albert G. Landers
Patented Case
View Patent ↗
Granted: Jan 9, 1996
Filed: Oct 6, 1994
Inventors
Debra L. Morris
Albert G. Landers
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.