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发明名称
Electrical transmission of intelligence
摘要
申请公布号
GB363629(A)
申请公布日期
1931.12.14
申请号
GB19300027413
申请日期
1930.09.13
申请人
SAMUEL FINKEL STEIN
发明人
分类号
H04M3/487
主分类号
H04M3/487
代理机构
代理人
主权项
地址
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