3106029

Information

• Patent Grant
• 3106029

• References
• Source

• Patent Number

  3,106,029

• Date Filed

  Not available

• Date Issued

  Tuesday, October 8, 1963
  61 years ago

• CPC

  • G09B1/28 - the elements being slidable

• US Classifications

  • 040 - Card, picture, or sign exhibiting
  • 434 - Education and demonstration
  • 446 - Amusement devices: toys