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发明名称
Trollery switch and frog
摘要
申请公布号
US2300390(A)
申请公布日期
1942.10.27
申请号
US19410392229
申请日期
1941.05.07
申请人
THE OHIO BRASS COMPANY
发明人
DAVIS LELAND L.
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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