Granted Patent
Utility
US 5,816,435 · App. 08/735,610
Double wall storage tank having an extruded outer sheath and a method for making same
Inventor:
David T. Palazzo
Patented Case
View Patent ↗
Granted: Oct 6, 1998
Filed: Oct 23, 1996
Inventor
David T. Palazzo
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.