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发明名称
摘要
申请公布号
JPS5239249(B2)
申请公布日期
1977.10.04
申请号
JP19720008167
申请日期
1972.01.20
申请人
发明人
分类号
E04D11/02;E04D5/14
主分类号
E04D11/02
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