Granted Patent
Utility
US 6,772,571 · App. 10/223,042
Upper beam bolster for use in construction
Inventor:
Felix L. Sorkin
Patented Case
View Patent ↗
Granted: Aug 10, 2004
Filed: Aug 19, 2002
Inventor
Felix L. Sorkin
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.