Granted Patent
Utility
US 5,791,816 · App. 08/742,251
Concrete joint restraint system
Inventor:
James P. McCallion
Patented Case
View Patent ↗
Granted: Aug 11, 1998
Filed: Oct 31, 1996
Inventor
James P. McCallion
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.