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发明专利：一种铁路车辆摘挂作业电子感应器及其自动感知方法,ZL201310670835.3
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Service Invention or Not:no
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发明专利：一种用于铁路信号联锁系统的安全与门电路,ZL201410771078.3
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发明专利：电动/气动转辙机安全型控制器,ZL200710302457.8
