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发明名称
MANHOLE DOOR
摘要
申请公布号
JPS5314948(A)
申请公布日期
1978.02.10
申请号
JP19760088991
申请日期
1976.07.28
申请人
BABCOCK HITACHI KK
发明人
HASE SHINJI
分类号
E02D29/14
主分类号
E02D29/14
代理机构
代理人
主权项
地址
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