Granted Patent
Utility
US 5,693,412 · App. 08/271,769
Gas impermeable, elastically deformable laminate and inflatable articles formed therefrom
Inventor:
William D. Walters
Patented Case
View Patent ↗
Granted: Dec 2, 1997
Filed: Jul 7, 1994
Inventor
William D. Walters
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.