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发明名称
Manhole guard
摘要
申请公布号
AU5426301(A)
申请公布日期
2002.01.10
申请号
AU20010054263
申请日期
2001.07.06
申请人
DAGENHAM PTY LTD
发明人
ROBERT HAYSOM
分类号
E02D29/12;E04H17/18
主分类号
E02D29/12
代理机构
代理人
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地址
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