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摘要
申请公布号
US1787262(A)
申请公布日期
1930.12.30
申请号
US19290393879
申请日期
1929.09.20
申请人
THOMAS ROBERTON LLOYD
发明人
ROBERTON LLOYD THOMAS
分类号
H01H25/06
主分类号
H01H25/06
代理机构
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