Granted Patent
Utility
US 5,578,363 · App. 08/476,737
Floor covering underlayment
Inventors:
Brenda L. Finley, Ralph W. Wright, Jr.
Patented Case
View Patent ↗
Granted: Nov 26, 1996
Filed: Jun 7, 1995
Inventors
Brenda L. Finley
Ralph W. Wright, Jr.
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.