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经营范围
发明名称
Revêtement de puits et en particulier de bure
摘要
申请公布号
FR1151885(A)
申请公布日期
1958.02.06
申请号
FRD1151885
申请日期
1956.06.26
申请人
ESCHWEILER BERGWERKS-VEREIN
发明人
分类号
E21D5/06;E21D11/18
主分类号
E21D5/06
代理机构
代理人
主权项
地址
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