Backgammon Game Or Gameboard Patents (Class D21/900)
  • Toy building element
    Patent number: D435609
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: December 26, 2000
    Inventor: Soren Christian Sorensen
  • Checkerboard
    Patent number: D1096954
    Type: Grant
    Filed: October 23, 2024
    Date of Patent: October 7, 2025
    Inventor: Xiaoming Zeng