US Trademark Classification US11 Lighting, heating and air conditioning 灯泡（011-938） Class 11 Lightbulbs 011-938 灯泡 Chinese 灯泡 English Lightbulbs Spanish Bombillas Term ID 011-938 Class 11 Type Goods Status Active · added, not since modified (A) Effective date 2008-01-17 Version 09-2007