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发明名称
Procédé de perçage dans la tôle d'ouvertures de petites dimensions
摘要
申请公布号
FR1073726(A)
申请公布日期
1954.09.28
申请号
FRD1073726
申请日期
1953.03.23
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
B21D31/02
主分类号
B21D31/02
代理机构
代理人
主权项
地址
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