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经营范围
发明名称
POWER SHOVELS
摘要
申请公布号
GB2032384(B)
申请公布日期
1982.11.03
申请号
GB19790033474
申请日期
1979.09.27
申请人
DRESSER INDUSTRIES INC
发明人
分类号
E02F3/30;E02F3/42;E02F9/20;(IPC1-7):E02F3/30
主分类号
E02F3/30
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代理人
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