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发明名称
Improvements in manhole covers and the like
摘要
申请公布号
GB1102946(A)
申请公布日期
1968.02.14
申请号
GB19660007716
申请日期
1966.02.22
申请人
BROADS MANUFACTURING COMPANY LIMITED
发明人
ROBINSON GERALD
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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