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发明名称
Power supply system
摘要
申请公布号
US1804664(A)
申请公布日期
1931.05.12
申请号
US19300485703
申请日期
1930.10.01
申请人
THE UNION SWITCH & SIGNAL COMPANY
发明人
ZIERDT CONRAD H.
分类号
B61L1/18
主分类号
B61L1/18
代理机构
代理人
主权项
地址
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