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发明名称
Trolley pole base construction
摘要
申请公布号
US1939530(A)
申请公布日期
1933.12.12
申请号
US19300463320
申请日期
1930.06.23
申请人
GABRIEL STEEL COMPANY
发明人
WALL FRANK E.
分类号
B60L5/12
主分类号
B60L5/12
代理机构
代理人
主权项
地址
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