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发明名称
摘要
申请公布号
JPS6411769(B2)
申请公布日期
1989.02.27
申请号
JP19800084650
申请日期
1980.06.24
申请人
NIT CO LTD
发明人
NAKANISHI WATARU
分类号
E02D3/12
主分类号
E02D3/12
代理机构
代理人
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