Granted Patent
Utility
US 6,219,991 · App. 07/767,405
Method of externally strengthening concrete columns with flexible strap of reinforcing material
Inventor:
Hossein Salek-Nejad
Patented Case
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Granted: Apr 24, 2001
Filed: Sep 30, 1991
Inventor
Hossein Salek-Nejad
Assignees (at issue)
Hexcel Corporation
Fyfe Co., LLC
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.