Object cleaning device
Offset sidebar flight supporting chain
Oral brushing devices
Oral brushing devices and/or methods
Oral care device
Oral care implement and method of decorating
Oral hygiene device
Oral hygiene devices
Oral-care device and system
Orbital floor treatment device
Orbiter floor machine
Oscillatable toothbrush
Oscillating gear ratchet drive
Oscillating power brush
Oscillating toothbrush
Overflow scrub-washing method and apparatus
Overhead brush system with lateral movement
Overhead car washes
Overhead throwing sweeping machine