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发明名称
摘要
申请公布号
BE723865(A)
申请公布日期
1969.04.16
申请号
BED723865
申请日期
1968.11.14
申请人
发明人
分类号
B23D31/00;B30B9/32
主分类号
B23D31/00
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代理人
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地址
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