3691704

Information

• Patent Grant
• 3691704

• References
• Source

• Patent Number

  3,691,704

• Date Filed

  Not available

• Date Issued

  Tuesday, September 19, 1972
  52 years ago

• CPC

  • A63F9/12 - Three-dimensional jig-saw puzzles
  • A63H33/062 - with clip or snap mechanisms
  • B65D88/04 - spherical
  • E04B1/3211 - Structures with a vertical rotation axis or the like
  • A63F2009/1094 - non-planar
  • A63F2009/1216 - using locking or binding pins
  • A63F2009/124 - with a final configuration being a sphere
  • E04B2001/3276 - Panel connection details
  • Y10S52/10 - Polyhedron

• US Classifications

  • 052 - Static structures
  • 220 - Receptacles
  • 273 - Amusement devices: games
  • 428 - Stock material or miscellaneous articles
  • 434 - Education and demonstration