Including Ball, Roller Or Endless-belt Tool Patents (Class 401/208)
- Adjustable-length reservoir (Class 401/210)
- Magnetic ball-retainer (Class 401/211)
- Ball-bearing mounting (Class 401/212)
- With sealing cap (Class 401/213)
- Elastic ball-mounting (Class 401/214)
- Specific ball (Class 401/215)
- Specific ball-retainer (Class 401/216)
- With means to vent reservoir (Class 401/217)