Granted Patent
Utility
US 5,874,161 · App. 08/555,386
Plain surface acoustical product and coating therefor
Inventors:
James D. Pape, Darryl L. Sensenig
Patented Case
View Patent ↗
Granted: Feb 23, 1999
Filed: Nov 9, 1995
Inventors
James D. Pape
Darryl L. Sensenig
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.