CN211019250U - 一种多功能多模基站及多功能井下通讯定位系统 - Google Patents
一种多功能多模基站及多功能井下通讯定位系统 Download PDFInfo
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- CN211019250U CN211019250U CN201922389863.3U CN201922389863U CN211019250U CN 211019250 U CN211019250 U CN 211019250U CN 201922389863 U CN201922389863 U CN 201922389863U CN 211019250 U CN211019250 U CN 211019250U
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- 238000004891 communication Methods 0.000 title claims abstract description 39
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GR01 | Patent grant | ||
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PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A multifunctional multimode base station and multifunctional underground communication and positioning system Effective date of registration: 20230323 Granted publication date: 20200714 Pledgee: Agricultural Bank of China Limited Changsha Lushan Sub branch Pledgor: CHANGSHA DIGITAL MINE CO.,LTD. Registration number: Y2023430000010 |
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PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
CP03 | Change of name, title or address |
Address after: 10/F, Building C1, Lugu Enterprise Plaza, No. 27 Wenxuan Road, Yuelu District, Changsha City, Hunan Province, 410000 Patentee after: Changsha Dimai Technology Co.,Ltd. Country or region after: China Address before: 10/F, Building C1, Lugu Enterprise Plaza, No. 27 Wenxuan Road, Yuelu District, Changsha City, Hunan Province, 410000 Patentee before: CHANGSHA DIGITAL MINE CO.,LTD. Country or region before: China |
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CP03 | Change of name, title or address |