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发明名称
TUNNEL COVERING STRUCTURE
摘要
申请公布号
JPH03137398(A)
申请公布日期
1991.06.11
申请号
JP19890274682
申请日期
1989.10.20
申请人
NIPPON SAMIKON KK
发明人
MATSUBA YOSHIHARU;OSAWA HIROSHI;GOTO YOSHIHARU;SATO AKIRA
分类号
E21D11/08
主分类号
E21D11/08
代理机构
代理人
主权项
地址
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