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发明名称
REERUKOTEISOCHI
摘要
申请公布号
JPS51102848(A)
申请公布日期
1976.09.10
申请号
JP19750025956
申请日期
1975.03.05
申请人
HITACHI LTD
发明人
CHUHEITO AKIRA
分类号
E01B9/32;B66B7/02
主分类号
E01B9/32
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