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发明名称
Clockwork operated circuit selector
摘要
申请公布号
US2215842(A)
申请公布日期
1940.09.24
申请号
US19390273358
申请日期
1939.05.12
申请人
BRIGSTED THOMSEN ALBERG
发明人
THOMSEN ALBERG BRIGSTED
分类号
G04C23/00
主分类号
G04C23/00
代理机构
代理人
主权项
地址
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