3578331

Information

• Patent Grant
• 3578331

• References
• Source

• Patent Number

  3,578,331

• Date Filed

  Not available

• Date Issued

  Tuesday, May 11, 1971
  54 years ago

• CPC

  • A63F9/12 - Three-dimensional jig-saw puzzles
  • A63F2009/1094 - non-planar
  • A63F2009/124 - with a final configuration being a sphere
  • A63F2250/482 - with holes or fingers
  • Y10S52/10 - Polyhedron

• US Classifications

  • 273 - Amusement devices: games
  • 052 - Static structures
  • 428 - Stock material or miscellaneous articles
  • 434 - Education and demonstration
  • D21 - Games, toys, and sports goods