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发明名称
摘要
申请公布号
JPS446953(Y1)
申请公布日期
1969.03.14
申请号
JP19650001927U
申请日期
1965.01.14
申请人
发明人
分类号
B04B15/02;(IPC1-7):B04B15/02
主分类号
B04B15/02
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代理人
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地址
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