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经营范围
发明名称
Obturation hermétique à ouverture rapide
摘要
申请公布号
FR60376(E)
申请公布日期
1954.11.02
申请号
FRD60376
申请日期
1950.06.06
申请人
发明人
BOUCHER
分类号
F16L21/03
主分类号
F16L21/03
代理机构
代理人
主权项
地址
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