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发明名称
Mechanism for controlling electric circuits
摘要
申请公布号
US1983236(A)
申请公布日期
1934.12.04
申请号
US19320596763
申请日期
1932.03.04
申请人
LITTLE FREDERICK B
发明人
LITTLE FREDERICK B.
分类号
G04C21/10
主分类号
G04C21/10
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代理人
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