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经营范围
发明名称
Telegraph transmitter
摘要
申请公布号
US2133056(A)
申请公布日期
1938.10.11
申请号
US19360118100
申请日期
1936.12.29
申请人
TELEFONBAU UND NORMALZEIT AKTIENGESELLSCHAFT
发明人
LAHL ALFRED
分类号
H04L17/06
主分类号
H04L17/06
代理机构
代理人
主权项
地址
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