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发明名称
HOT WATER CIRCULATING DEVICE FOR PREVENTING FROZEN SOIL LAYER FROM GROWING
摘要
申请公布号
JPS5494707(A)
申请公布日期
1979.07.26
申请号
JP19780002143
申请日期
1978.01.12
申请人
HITACHI CABLE
发明人
SUZUKI NOBUTAKA;ONODERA TAKESHI;TANNO YOSHIHISA
分类号
E02D31/00;F17C13/10
主分类号
E02D31/00
代理机构
代理人
主权项
地址
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