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发明名称
摘要
申请公布号
JPS4993736(U)
申请公布日期
1974.08.14
申请号
JP19720138959U
申请日期
1972.12.02
申请人
发明人
分类号
E04H12/22;(IPC1-7):E04H12/22
主分类号
E04H12/22
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代理人
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地址
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