Head Coverings Patents (Class 2/171)
- Brim edge binding (Class 2/175.2)
- Having exterior crown engaging band or trim (Class 2/175.3)
- Having a shape retaining internal form (e.g., plate, wire frame, crease retainer, etc.) (Class 2/175.4)
- Having detachable weather guard (Class 2/175.6)
- Having hanger or guard cord (Class 2/175.7)
- Straw (Class 2/175.8)
- Felt (Class 2/175.9)