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发明名称
Procédé de construction pour plaques de parois creuses, de préférence à assemblage par rivetage
摘要
申请公布号
FR803542(A)
申请公布日期
1936.10.02
申请号
FRD803542
申请日期
1936.03.18
申请人
发明人
BECKER
分类号
B21J15/36
主分类号
B21J15/36
代理机构
代理人
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地址
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