发明授权
EP0118251B1 Method of electrostatically coating phosphor onto envelopes for fluorescent lamps and lamps coated thereby 失效
将荧光涂覆在荧光灯和其上涂覆的光泽材料的方法

Method of electrostatically coating phosphor onto envelopes for fluorescent lamps and lamps coated thereby
信息查询
0/0