Granted Patent
Utility
US 4,324,082 · App. 06/092,587
Metal stud
Inventors:
Edward J. Rutkowski, Carl R. Mapes, Steven D. Wing, Jack A. Dawdy
Patented Case
View Patent ↗
Granted: Apr 13, 1982
Filed: Nov 8, 1979
Inventors
Edward J. Rutkowski
Carl R. Mapes
Steven D. Wing
Jack A. Dawdy
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.