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发明名称
Machine pour fabriquer en continu, à partir de rubans en feuillard, des tuyaux rainurés en hélice
摘要
申请公布号
FR1149335(A)
申请公布日期
1957.12.24
申请号
FRD1149335
申请日期
1956.04.14
申请人
FENWICK
发明人
分类号
B21C37/12
主分类号
B21C37/12
代理机构
代理人
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