Granted Patent
Utility
US 6,539,995 · App. 09/818,492
Releasing device for snow chains
Inventors:
Romolo Airoldi, Marco Arrigoni Neri
Patented Case
View Patent ↗
Granted: Apr 1, 2003
Filed: Mar 28, 2001
Inventors
Romolo Airoldi
Marco Arrigoni Neri
Assignee (at issue)
Konig SpA
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.