Granted Patent
Utility
US 4,986,052 · App. 07/432,487
Truss setting system
Inventor:
Thomas E. Nelson
Patented Case
View Patent ↗
Granted: Jan 22, 1991
Filed: Nov 7, 1989
Inventor
Thomas E. Nelson
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.