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发明名称
Telephone system
摘要
申请公布号
US2036163(A)
申请公布日期
1936.03.31
申请号
US19340741378
申请日期
1934.08.25
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
TATZL HANS
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
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地址
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