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发明名称
Grader
摘要
申请公布号
GB2065749(A)
申请公布日期
1981.07.01
申请号
GB19800031991
申请日期
1980.10.03
申请人
GRUBB L M
发明人
分类号
E02F3/76;E02F9/02;(IPC1-7):E02F3/76
主分类号
E02F3/76
代理机构
代理人
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