CN213935209U - 一种银幕与投影灯同步升降*** - Google Patents
一种银幕与投影灯同步升降*** Download PDFInfo
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Effective date of registration: 20240126 Address after: 253000 Tianqu Street Office, Decheng District, Dezhou City, Shandong Province, China, No. 677 Hubin North Avenue, Huangming Solar Energy Co., Ltd. Factory Area, 4th Floor, South End Office Patentee after: Dezhou Bochuangxin Energy Technology Co.,Ltd. Country or region after: China Address before: No. 968, Daxue East Road, Dezhou City, Shandong Province Patentee before: SHANDONG HUAYU University OF TECHNOLOGY Country or region before: China |
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