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经营范围
发明名称
Face support
摘要
申请公布号
US3393522(A)
申请公布日期
1968.07.23
申请号
US19660524528
申请日期
1966.02.02
申请人
STAMICARBON N. V.
发明人
FONTEIN FREERK J.
分类号
E21D23/00;E21D23/04
主分类号
E21D23/00
代理机构
代理人
主权项
地址
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