Granted Patent
Utility
US 4,862,603 · App. 07/096,190
Footwear structure incorporating a heating device particularly for ski boots
Inventor:
Renzo Balbinot
Patented Case
View Patent ↗
Granted: Sep 5, 1989
Filed: Sep 14, 1987
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.