Granted Patent
Utility
US 4,725,477 · App. 06/812,516
Predecorated gypsum board
Inventors:
Donald R. Kole, Arthur E. Kennedy, George J. Bean, Jr.
Patented Case
View Patent ↗
Granted: Feb 16, 1988
Filed: Dec 23, 1985
Inventors
Donald R. Kole
Arthur E. Kennedy
George J. Bean, Jr.
Assignee (at issue)
National Gypsum Company
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.