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发明名称
Perfectionnement à la fabrication des tubes métalliques soudés
摘要
申请公布号
FR948763(A)
申请公布日期
1949.08.10
申请号
FRD948763
申请日期
1947.06.13
申请人
COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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