Granted Patent
Utility
US 5,711,451 · App. 08/698,488
Concrete tank support system
Inventor:
Norman W. Gavin
Patented Case
View Patent ↗
Granted: Jan 27, 1998
Filed: Aug 15, 1996
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.