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发明名称
Obturateur hermétique pour conduits et récipients à col
摘要
申请公布号
FR977764(A)
申请公布日期
1951.04.05
申请号
FRD977764
申请日期
1942.11.03
申请人
发明人
BOLLE HENRY
分类号
F16L55/136
主分类号
F16L55/136
代理机构
代理人
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