3771891

Information

• Patent Grant
• 3771891

• References
• Source

• Patent Number

  3,771,891

• Date Filed

  Not available

• Date Issued

  Tuesday, November 13, 1973
  51 years ago

• CPC

  • E01C13/107 - Non-frozen surfacings for ice, skating or curling rinks or for sledge runs; Rinks or runs with such surfacings

• US Classifications

  • 404 - Road structure, process, or apparatus
  • 472 - Amusement devices