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发明名称
Antiparasitic system for telegraph signals with electrostatic storing of signals
摘要
申请公布号
US1997683(A)
申请公布日期
1935.04.16
申请号
US19310545699
申请日期
1931.06.20
申请人
SIEMENS & HALSKE, AKTIENGESELLSCHAFT
发明人
HENNIG FRITZ
分类号
H04L1/08
主分类号
H04L1/08
代理机构
代理人
主权项
地址
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