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发明名称
CHIKADOCHIKUZOHOHO
摘要
申请公布号
JPH0236756(B2)
申请公布日期
1990.08.20
申请号
JP19860312866
申请日期
1986.12.26
申请人
OKUMURA CORP
发明人
MURAI MICHITADA
分类号
E21D9/00;E21D9/04
主分类号
E21D9/00
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