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发明名称
HYDRAULIC MEDIUM FOR MECHANIZED LININGS
摘要
申请公布号
PL121070(B1)
申请公布日期
1982.04.30
申请号
PL19770201662
申请日期
1977.10.20
申请人
发明人
分类号
E21D;(IPC1-7):C10M1/06
主分类号
E21D
代理机构
代理人
主权项
地址
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