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经营范围
发明名称
WORKING MEMBER FOR LOOSENING FROZEN SOIL
摘要
申请公布号
SU1550020(A1)
申请公布日期
1990.03.15
申请号
SU19884439311
申请日期
1988.03.30
申请人
LE INZH-STR INSTITUT
发明人
KARPOV VLADILEN V,SU;BIRYUCHEV BORIS N,SU;NEFEDOV ALEKSANDR V,SU;GONCHAROV DMITRIJ V,SU;KOSHIN ALEKSANDR P,SU
分类号
E01B27/00
主分类号
E01B27/00
代理机构
代理人
主权项
地址
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