3813841

Information

• Patent Grant
• 3813841

• References
• Source

• Patent Number

  3,813,841

• Date Filed

  Not available

• Date Issued

  Tuesday, June 4, 1974
  50 years ago

• CPC

  • A63H33/082 - with dovetails
  • F16S5/00 - other constructional members not restricted to an application fully provided for in a single class
  • A63F9/10 - Two-dimensional jig-saw puzzles
  • A63F9/12 - Three-dimensional jig-saw puzzles

• US Classifications

  • 052 - Static structures
  • 273 - Amusement devices: games
  • 446 - Amusement devices: toys