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发明名称
Supporting arm device
摘要
申请公布号
US2184587(A)
申请公布日期
1939.12.26
申请号
US19380205861
申请日期
1938.05.03
申请人
HELMER EKSTRAND KARL
发明人
EKSTRAND KARL HELMER
分类号
B60G3/00
主分类号
B60G3/00
代理机构
代理人
主权项
地址
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