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发明名称
HYDRAULIC PROP
摘要
申请公布号
SU1461981(A1)
申请公布日期
1989.02.28
申请号
SU19874305042
申请日期
1987.07.30
申请人
SHAKHTA "YUN-YAGA" PROIZVODSTVENNOGO OBEDINENIYA PO DOBYCHE UGLYA "VORKUTAUGOL";GNI PK P UGOLNYJ I S EX ZAVODOM
发明人
STROYAKOVSKIJ LEV M,SU;GUSELNIKOV LEV M,SU;EFIMENKO ALEKSANDR A,SU
分类号
E21D15/44;E21D23/04
主分类号
E21D15/44
代理机构
代理人
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地址
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