Granted Patent
Utility
US 6,466,870 · App. 09/790,756
System and method for maintaining a ski slope using snowmaking apparatuses
Inventor:
Toshihide Satonaka
Patented Case
View Patent ↗
Granted: Oct 15, 2002
Filed: Feb 22, 2001
Inventor
Toshihide Satonaka
Assignee (at issue)
Kabushikikaisha Piste Snow Industries
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.