Granted Patent
Utility
US 5,347,787 · App. 08/112,011
Universal spacer for concrete reinforcement rods
Inventor:
Norman W. Gavin
Patented Case
View Patent ↗
Granted: Sep 20, 1994
Filed: Aug 25, 1993
Inventor
Norman W. Gavin
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.