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发明名称
Improvements in and relating to the laying of pipes, cables and the like in open trenches
摘要
申请公布号
GB559401(A)
申请公布日期
1944.02.17
申请号
GB19420015172
申请日期
1942.10.29
申请人
EDWARD ARTHUR YATES
发明人
分类号
E02F5/10;F16L1/06;H02G1/06
主分类号
E02F5/10
代理机构
代理人
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