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发明名称
摘要
申请公布号
JPS526016(B2)
申请公布日期
1977.02.18
申请号
JP19720036158
申请日期
1972.04.11
申请人
发明人
分类号
E04G21/12;E04C5/16
主分类号
E04G21/12
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代理人
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地址
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