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发明名称
Shovel control
摘要
申请公布号
US2648231(A)
申请公布日期
1953.08.11
申请号
US19470750611
申请日期
1947.05.26
申请人
WINDAHL EVERETT R
发明人
WINDAHL EVERETT R.
分类号
E02F9/20
主分类号
E02F9/20
代理机构
代理人
主权项
地址
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