CN215397903U - 一种学校用多途径展示教学辅助装置 - Google Patents
一种学校用多途径展示教学辅助装置 Download PDFInfo
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Effective date of registration: 20230712 Address after: No. 99, Limin Road, Longhua Town, Longhua County, Chengde City, Hebei Province 067000 Patentee after: Xu Lingyan Address before: 510000 rooms 802 and 803, No. 69, Xianlie Middle Road, Yuexiu District, Guangzhou City, Guangdong Province Patentee before: Guangzhou Nanyang vocational training school |
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Effective date of registration: 20230727 Address after: 12 South St, Huairou Town, Huairou District, Beijing 101400 Patentee after: Beijing Dadao Zhihe Culture Co.,Ltd. Address before: No. 99, Limin Road, Longhua Town, Longhua County, Chengde City, Hebei Province 067000 Patentee before: Xu Lingyan |