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发明名称
摘要
申请公布号
BE736038(A)
申请公布日期
1969.12.16
申请号
BED736038
申请日期
1969.07.14
申请人
发明人
分类号
B04B9/12;B04B11/04
主分类号
B04B9/12
代理机构
代理人
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地址
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