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发明名称
Trolley pole device
摘要
申请公布号
US1858402(A)
申请公布日期
1932.05.17
申请号
US19300481146
申请日期
1930.09.11
申请人
THE OHIO BRASS COMPANY
发明人
LARSSON ERNST A.
分类号
B60L5/14
主分类号
B60L5/14
代理机构
代理人
主权项
地址
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