Game Or Gambling Article Patents (Class D21/300)
- Folding (Class D21/335)
- Stepped, tiered or vertical orientation (Class D21/336)
- Playing surface completely surrounded by lip or wall (Class D21/338)
- Pocket or recess for capture of game piece (Class D21/342)
- Combined with chance-determining device (Class D21/347)
- Checkerboard type (Class D21/348)
- Simulative (Class D21/350)
- Circular perimeter (Class D21/362)
- Polygonal perimeter (Class D21/363)