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发明名称
Improvements in or relating to grading machines
摘要
申请公布号
GB766667(A)
申请公布日期
1957.01.23
申请号
GB19540005919
申请日期
1954.03.01
申请人
AVELING-BARFORD LIMITED
发明人
GUY PETER JOHN DE NORMANVILLE
分类号
E02F3/76;E02F3/84
主分类号
E02F3/76
代理机构
代理人
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