2871581

Information

• Patent Grant
• 2871581

• References
• Source

• Patent Number

  2,871,581

• Date Filed

  Not available

• Date Issued

  Tuesday, February 3, 1959
  65 years ago

• CPC

  • G09B19/02 - Counting Calculating
  • A63F3/0415 - Number games
  • A63F9/0413 - Cuboid dice
  • A63F2009/0437 - twelve-sided

• US Classifications

  • 273 - Amusement devices: games
  • 434 - Education and demonstration