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发明名称
OPENING AND CLOSING TYPE PIT COVER
摘要
申请公布号
JPH09328810(A)
申请公布日期
1997.12.22
申请号
JP19960147461
申请日期
1996.06.10
申请人
YODOGAWA STEEL WORKS LTD
发明人
TANAKA TOSHIMICHI
分类号
E02D29/14;E03F5/06;(IPC1-7):E03F5/06
主分类号
E02D29/14
代理机构
代理人
主权项
地址
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