CN206021634U - 基于红外超声定位技术的课堂互动答题器 - Google Patents
基于红外超声定位技术的课堂互动答题器 Download PDFInfo
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- CN206021634U CN206021634U CN201620695904.5U CN201620695904U CN206021634U CN 206021634 U CN206021634 U CN 206021634U CN 201620695904 U CN201620695904 U CN 201620695904U CN 206021634 U CN206021634 U CN 206021634U
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Effective date of registration: 20210430 Address after: 101500 room 501-3483, Development Zone office building, No.8, Xingsheng South Road, economic development zone, Miyun District, Beijing Patentee after: Beijing Xiaoyang Hexun Education Technology Co.,Ltd. Address before: 100085 room 02d-356, block B (second floor), No.A 28, information road, Haidian District, Beijing Patentee before: BEIJING ZHONGDIAN HEXUN TECHNOLOGY Co.,Ltd. |
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TR01 | Transfer of patent right |
Effective date of registration: 20210528 Address after: 101500 room 501-3483, Development Zone office building, No.8, Xingsheng South Road, economic development zone, Miyun District, Beijing Patentee after: Beijing Xiaoyang Hexun Education Technology Co.,Ltd. Patentee after: BEIJING ZHONGDIAN HEXUN TECHNOLOGY Co.,Ltd. Address before: 101500 room 501-3483, Development Zone office building, No.8, Xingsheng South Road, economic development zone, Miyun District, Beijing Patentee before: Beijing Xiaoyang Hexun Education Technology Co.,Ltd. |
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Effective date of registration: 20210809 Address after: 101500 room 501-3483, Development Zone office building, No.8, Xingsheng South Road, economic development zone, Miyun District, Beijing Patentee after: Beijing Xiaoyang Hexun Education Technology Co.,Ltd. Address before: 101500 room 501-3483, Development Zone office building, No.8, Xingsheng South Road, economic development zone, Miyun District, Beijing Patentee before: Beijing Xiaoyang Hexun Education Technology Co.,Ltd. Patentee before: BEIJING ZHONGDIAN HEXUN TECHNOLOGY Co.,Ltd. |
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CP03 | Change of name, title or address | ||
CP03 | Change of name, title or address |
Address after: 101520 room 106-357, building 2, yard 8, Xingsheng South Road, Miyun District, Beijing (centralized office area of business center) Patentee after: Beijing Xiaoyang Hexun Technology Co.,Ltd. Address before: 101500 room 501-3483, Development Zone office building, No.8, Xingsheng South Road, economic development zone, Miyun District, Beijing Patentee before: Beijing Xiaoyang Hexun Education Technology Co.,Ltd. |
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Granted publication date: 20170315 |