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发明名称
摘要
申请公布号
JPS4852092(A)
申请公布日期
1973.07.21
申请号
JP19710086254
申请日期
1971.11.01
申请人
发明人
分类号
B23H7/02;B21D37/20
主分类号
B23H7/02
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代理人
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地址
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