SHENZHEN LANGHENG ELECTRICAL CO., LTD.
SHENZHEN LANGHENG ELECTRICAL CO., LTD. Patent applications | ||
Patent application number | Title | Published |
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20110285285 | MECHANICAL TURNPLATE TYPE ROTATABLY DIMMING DEVICE AND DIMMING METHOD THEREOF - A mechanical turnplate type rotatably dimming device has a bottom part ( | 11-24-2011 |