Granted Patent
Utility
US 6,318,110 · App. 09/487,374
Artificial snow system with air roof
Inventor:
Minoru Katayama
Patented Case
View Patent ↗
Granted: Nov 20, 2001
Filed: Jan 18, 2000
Inventor
Minoru Katayama
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.