1470845

Information

• Patent Grant
• 1470845

• References
• Source

• Patent Number

  1,470,845

• Date Filed

  Not available

• Date Issued

  Tuesday, October 16, 1923
  100 years ago

• CPC

  • G09B1/20 - and bearing the symbols on a surface parallel to the axis of rotation

• US Classifications

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