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发明名称
摘要
申请公布号
FR1574995(A)
申请公布日期
1969.07.18
申请号
FRD1574995
申请日期
1968.07.18
申请人
发明人
分类号
B23D53/02;B23D53/04
主分类号
B23D53/02
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