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发明名称
Dispositif à soupapes pour étançons hydrauliques de mines
摘要
申请公布号
FR1202560(A)
申请公布日期
1960.01.12
申请号
FRD1202560
申请日期
1958.09.13
申请人
GUTEHOFFNUNGSHUTTE STERKRADE AKTIENGESELLSCHAFT
发明人
分类号
E21D15/51
主分类号
E21D15/51
代理机构
代理人
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