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发明名称
Trolley switch and switching system
摘要
申请公布号
US2299914(A)
申请公布日期
1942.10.27
申请号
US19410377150
申请日期
1941.02.03
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
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