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发明名称
Procédé perfectionné pour pratiquer une ouverture dans une pièce métallique
摘要
申请公布号
FR936412(A)
申请公布日期
1948.07.20
申请号
FRD936412
申请日期
1946.12.02
申请人
THE WATERBURY FARREL FOUNDRY AND MACHINE CO
发明人
分类号
B21K1/64
主分类号
B21K1/64
代理机构
代理人
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地址
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