3815901

Information

• Patent Grant
• 3815901

• References
• Source

• Patent Number

  3,815,901

• Date Filed

  Not available

• Date Issued

  Tuesday, June 11, 1974
  50 years ago

• CPC

  • F25C3/04 - for sledging or ski trails Production of artificial snow
  • A63C19/10 - Ice-skating or roller-skating rinks Slopes or trails for skiing, ski-jumping or tobogganing
  • E01C13/105 - of artificially refrigerated rinks or runs

• US Classifications

  • 472 - Amusement devices
  • 062 - Refrigeration
  • 104 - Railways