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发明名称
Telegraph transmitter
摘要
申请公布号
US2241780(A)
申请公布日期
1941.05.13
申请号
US19400334181
申请日期
1940.05.09
申请人
SIEMENS & HALSKE, AKTIENGESELLSCHAFT
发明人
HENNIG FRITZ
分类号
H04L21/02
主分类号
H04L21/02
代理机构
代理人
主权项
地址
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