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发明名称
Procédé pour la fabrication mécanique des vis d'archimède métalliques
摘要
申请公布号
FR677026(A)
申请公布日期
1930.03.03
申请号
FRD677026
申请日期
1929.04.30
申请人
发明人
CHARAVIL LOUIS
分类号
B21C37/26
主分类号
B21C37/26
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