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经营范围
发明名称
Pump
摘要
申请公布号
US2011139(A)
申请公布日期
1935.08.13
申请号
US19300443870
申请日期
1930.04.12
申请人
BALLARD HERBERT D
发明人
BALLARD HERBERT D.
分类号
F04C2/352
主分类号
F04C2/352
代理机构
代理人
主权项
地址
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