Granted Patent
Utility
US 6,737,156 · App. 10/245,505
Interior wallboard and method of making same
Inventors:
Francis J. Koval, David J. Neal, Richard William Silversides, Joseph Riccio, Jr., Charles J. Raymond, Felmer F. Cummins
Patented Case
View Patent ↗
Granted: May 18, 2004
Filed: Sep 18, 2002
Inventors
Francis J. Koval
David J. Neal
Richard William Silversides
Joseph Riccio, Jr.
Charles J. Raymond
Felmer F. Cummins
Assignee (at issue)
G-P Gypsum Corp.
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.