CN109882696B - 一种英语教学多媒体设备 - Google Patents
一种英语教学多媒体设备 Download PDFInfo
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CN110308611B (zh) * | 2019-07-22 | 2021-01-26 | 山东万恒电子通讯设备有限公司 | 一种投影仪自动调焦装置 |
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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 |
CN206197423U (zh) * | 2016-08-30 | 2017-05-31 | 周大权 | 电气自动化控制台 |
CN206489748U (zh) * | 2017-01-12 | 2017-09-12 | 上海杨浦区五角星亲子进修学校 | 一种幼儿识字装置 |
CN107329529A (zh) * | 2017-08-01 | 2017-11-07 | 合肥利元杰信息科技有限公司 | 一种计算机显示屏调节结构 |
CN208221924U (zh) * | 2018-05-30 | 2018-12-11 | 信丰达诚科技有限公司 | 一种电子线路板生产线的垫高墩 |
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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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