1578225

Information

• Patent Grant
• 1578225

• References
• Source

• Patent Number

  1,578,225

• Date Filed

  Not available

• Date Issued

  Tuesday, March 23, 1926
  98 years ago

• CPC

  • G09B1/40 - to form symbols or signs by appropriate arrangement

• US Classifications

  • 434 - Education and demonstration
  • 273 - Amusement devices: games
  • D21 - Games, toys, and sports goods