Oven
Oven
Oven housing
Oven in the shape of a fireplace
Over-pressure valve for ventilation
Overflow cavity and cover for bathtub
Overlapping fan-blade structure for a fan wheel
Overlay scroll work unit for a ceiling fan
Oxy-fuel burner for use in a metallurgical furnace
Ozone generator
Ozone generator
Ozone generator
Ozone generator for an automobile