3721446

Information

• Patent Grant
• 3721446

• References
• Source

• Patent Number

  3,721,446

• Date Filed

  Not available

• Date Issued

  Tuesday, March 20, 1973
  51 years ago

• CPC

  • A63H3/16 - made of parts that can be put together
  • A63F9/12 - Three-dimensional jig-saw puzzles
  • A63F2009/1272 - the pegs forming angles other than right angles in three dimensions
  • A63F2009/128 - with notches
  • Y10T70/7169 - Complex movement or puzzle type

• US Classifications

  • 273 - Amusement devices: games
  • 070 - Locks