1412204

Information

• Patent Grant
• 1412204

• References
• Source

• Patent Number

  1,412,204

• Date Filed

  Not available

• Date Issued

  Tuesday, April 11, 1922
  102 years ago

• CPC

  • G09B17/00 - Teaching reading
  • A63F9/0413 - Cuboid dice
  • A63F2009/0488 - with letters or words

• US Classifications

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