CN213123284U - Multifunctional gas monitoring and alarming device used in tunnel construction - Google Patents
Multifunctional gas monitoring and alarming device used in tunnel construction Download PDFInfo
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- CN213123284U CN213123284U CN202021237761.6U CN202021237761U CN213123284U CN 213123284 U CN213123284 U CN 213123284U CN 202021237761 U CN202021237761 U CN 202021237761U CN 213123284 U CN213123284 U CN 213123284U
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CN202021237761.6U CN213123284U (en) | 2020-06-29 | 2020-06-29 | Multifunctional gas monitoring and alarming device used in tunnel construction |
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CN202021237761.6U CN213123284U (en) | 2020-06-29 | 2020-06-29 | Multifunctional gas monitoring and alarming device used in tunnel construction |
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Address after: No.28, Development Zone Road, economic development zone, Fengning Manchu Autonomous County, Chengde City, Hebei Province 068350 Patentee after: Beiwang Group Co.,Ltd. Address before: No.28, Development Zone Road, economic development zone, Fengning Manchu Autonomous County, Chengde City, Hebei Province 068350 Patentee before: BEI WANG CONSTRUCTION GROUP CO.,LTD. |
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TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20220223 Address after: No.28, Development Zone Road, economic development zone, Fengning Manchu Autonomous County, Chengde City, Hebei Province 068350 Patentee after: Beiwang Group Co.,Ltd. Patentee after: Beiwang road and Bridge Construction Co.,Ltd. Address before: No.28, Development Zone Road, economic development zone, Fengning Manchu Autonomous County, Chengde City, Hebei Province 068350 Patentee before: Beiwang Group Co.,Ltd. |