Granted Patent
Utility
US 4,843,784 · App. 07/202,298
Integral wallboard and stud
Inventors:
Robert J. Menchetti, Richard P. Weir, Robert M. Chapman
Patented Case
View Patent ↗
Granted: Jul 4, 1989
Filed: Jun 6, 1988
Inventors
Robert J. Menchetti
Richard P. Weir
Robert M. Chapman
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.