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发明名称
Electric switching system
摘要
申请公布号
US2205927(A)
申请公布日期
1940.06.25
申请号
US19380236834
申请日期
1938.10.25
申请人
THE OHIO BRASS COMPANY
发明人
MATTHES SAMUEL S.
分类号
B60M1/14
主分类号
B60M1/14
代理机构
代理人
主权项
地址
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