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发明名称
摘要
申请公布号
JPS442904(Y1)
申请公布日期
1969.02.03
申请号
JP19650056622U
申请日期
1965.07.12
申请人
发明人
分类号
E01C11/02;E01C11/12;(IPC1-7):E01C11/12
主分类号
E01C11/02
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代理人
主权项
地址
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