Wheeled Skate Patents (Class 280/11.19)
- Different size wheels (Class 280/11.222)
- Axle mounting arrangement (Class 280/11.223)
- Including pivotally mounted boot (Class 280/11.224)
- Including shock absorbing means (Class 280/11.225)
- Spherical wheels (Class 280/11.226)
- Cylindrical wheels (Class 280/11.227)
- Three or four wheels (Class 280/11.231)
- Two wheels (Class 280/11.233)