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经营范围
发明名称
Circuit closer
摘要
申请公布号
US2006175(A)
申请公布日期
1935.06.25
申请号
US19300435397
申请日期
1930.03.13
申请人
OSBORN ALDEN E
发明人
OSBORN ALDEN E.
分类号
F21L4/00
主分类号
F21L4/00
代理机构
代理人
主权项
地址
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