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基于ZigBee和GPRS的双网塔式起重机安全监控系统

Date:2019-06-22

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Type of Patent:实用新型

State of Patent:Authorized patents

Application Number:201220574718.8

Service Invention or Not:no

Application Date:2012-11-05

Authorization Date:2013-04-07

Publication Date:2013-06-05

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