2774150

Information

• Patent Grant
• 2774150

• References
• Source

• Patent Number

  2,774,150

• Date Filed

  Not available

• Date Issued

  Tuesday, December 18, 1956
  68 years ago

• CPC

  • A63F9/08 - Puzzles provided with elements movable in relation
  • A63F9/0666 - matching elementary shapes to corresponding holes
  • A63F2250/245 - with a key

• US Classifications

  • 434 - Education and demonstration