CN109882696B - 一种英语教学多媒体设备 - Google Patents
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CN111543169A (zh) * | 2020-05-20 | 2020-08-18 | 纳恩博(北京)科技有限公司 | 高度调节机构及割草机 |
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CN204756360U (zh) * | 2015-07-08 | 2015-11-11 | 安徽工程大学 | 一种适于车辆的多媒体设备放置架 |
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Effective date of registration: 20210531 Address after: Room 206, business building 2, Huazhong Shuguang Software Park, 1 Guanshan 1st Road, Donghu New Technology Development Zone, Wuhan City, Hubei Province, 430000 Patentee after: Wuhan 21st century Smart Education Technology Co.,Ltd. Address before: No.33, Lane 159, Taiye Road, Fengxian District, Shanghai, 201499 Patentee before: Shanghai Yuanbao Industrial Design Co.,Ltd. Effective date of registration: 20210531 Address after: No.33, Lane 159, Taiye Road, Fengxian District, Shanghai, 201499 Patentee after: Shanghai Yuanbao Industrial Design Co.,Ltd. Address before: No.92 Zhujiang Road, Fushan District, Yantai City, Shandong Province Patentee before: YANTAI ENGINEERING & TECHNOLOGY College |
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