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发明名称
Perfectionnements apportés ou relatifs aux joints d'obturation par pression pour les tuyaux
摘要
申请公布号
FR931157(A)
申请公布日期
1948.02.16
申请号
FRD931157
申请日期
1946.07.23
申请人
发明人
HOBBS JAMES CLARENCE
分类号
F16L19/06
主分类号
F16L19/06
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代理人
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