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发明名称
ELECTROMAGNETIC RELAY
摘要
申请公布号
CA339642(A)
申请公布日期
1934.02.27
申请号
CAD339642
申请日期
申请人
THE AUTOMATIC TELEPHONE MANUFACTURING COMPANY LIMITED
发明人
SIDNEY REYNELL SMITH
分类号
主分类号
代理机构
代理人
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