3581408

Information

• Patent Grant
• 3581408

• References
• Source

• Patent Number

  3,581,408

• Date Filed

  Not available

• Date Issued

  Tuesday, June 1, 1971
  54 years ago

• CPC

  • A63F9/0876 - Bent wire or cord puzzles
  • A63F9/0666 - matching elementary shapes to corresponding holes
  • A63F2007/4081 - Ball with a hole sliding over a guide

• US Classifications

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