Granted Patent
Utility
US 5,845,447 · App. 08/839,126
Suspension ceiling system
Inventors:
Darryl C. Bodine, William C. Dorsey
Patented Case
View Patent ↗
Granted: Dec 8, 1998
Filed: Apr 23, 1997
Inventors
Darryl C. Bodine
William C. Dorsey
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.