3768176

Information

• Patent Grant
• 3768176

• References
• Source

• Patent Number

  3,768,176

• Date Filed

  Not available

• Date Issued

  Tuesday, October 30, 1973
  51 years ago

• CPC

  • G09B19/00 - Teaching not covered by other main groups of this subclass
  • A63F2003/00419 - with a shield in the middle

• US Classifications

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