Granted Patent
Utility
US 4,697,359 · App. 06/861,287
Footwear structure incorporating a heating device particularly for ski boots
Inventor:
Renzo Balbinot
Patented Case
View Patent ↗
Granted: Oct 6, 1987
Filed: May 9, 1986
Inventor
Renzo Balbinot
Assignee (at issue)
Nordica S.p.A.
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.