2612708

Information

• Patent Grant
• 2612708

• References
• Source

• Patent Number

  2,612,708

• Date Filed

  Not available

• Date Issued

  Tuesday, October 7, 1952
  72 years ago

• CPC

  • A63F9/10 - Two-dimensional jig-saw puzzles
  • G09B17/00 - Teaching reading
  • A63F9/1044 - Display boards therefor
  • A63F2009/1066 - completing a circuit if solved correctly

• US Classifications

  • 434 - Education and demonstration