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经营范围
发明名称
Power dipper trip
摘要
申请公布号
US1845779(A)
申请公布日期
1932.02.16
申请号
US19300483075
申请日期
1930.09.19
申请人
ANDERSON ALVIN W
发明人
ANDERSON ALVIN W.
分类号
E02F3/407
主分类号
E02F3/407
代理机构
代理人
主权项
地址
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