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经营范围
发明名称
Improved trolley wheels and the like devices for collecting electric current
摘要
申请公布号
GB433534(A)
申请公布日期
1935.08.12
申请号
GB19340004541
申请日期
1934.02.12
申请人
THOMAS BOLTON AND SONS LIMITED;WILLIAM ERNEST ALKINS;WALTER CARTWRIGHT
发明人
分类号
B60L5/06
主分类号
B60L5/06
代理机构
代理人
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地址
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