Granted Patent
Utility
US 4,982,545 · App. 07/378,280
Economical steel roof truss
Inventor:
Gustav M. Stromback
Patented Case
View Patent ↗
Granted: Jan 8, 1991
Filed: Jul 10, 1989
Inventor
Gustav M. Stromback
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.