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发明名称
Signaling system
摘要
申请公布号
US1788078(A)
申请公布日期
1931.01.06
申请号
US19260101287
申请日期
1926.04.12
申请人
WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY
发明人
BALSLEY JAMES R.
分类号
H03D11/02
主分类号
H03D11/02
代理机构
代理人
主权项
地址
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