Granted Patent
Utility
US 4,353,192 · App. 05/730,994
Fire-resistant metal stud
Inventors:
Robert J. Pearson, Rodney G. Buergin
Patented Case
View Patent ↗
Granted: Oct 12, 1982
Filed: Oct 8, 1976
Inventors
Robert J. Pearson
Rodney G. Buergin
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.