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发明名称
MANHOLE PROTECTIVE BLOCK
摘要
申请公布号
JPH101963(A)
申请公布日期
1998.01.06
申请号
JP19960175890
申请日期
1996.06.14
申请人
YABUZUKA KENZAI KOGYO KK
发明人
ITO TOSHIO;NIKAIDO JUNICHI;KANESAKA KATSUHIKO;HIDAKA KAZUKI
分类号
E02D29/14;(IPC1-7):E02D29/14
主分类号
E02D29/14
代理机构
代理人
主权项
地址
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