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发明名称
摘要
申请公布号
BE667815(A)
申请公布日期
1966.02.03
申请号
BED667815
申请日期
1965.08.03
申请人
发明人
分类号
B21D47/04;B23K13/02;B23K13/04;H05K9/00
主分类号
B21D47/04
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代理人
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