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发明名称
Umrechner fuer Fernmelde-, insbesondere Fernsprechanlagen
摘要
申请公布号
DE1067874(B)
申请公布日期
1959.10.29
申请号
DE1957S052026
申请日期
1957.01.23
申请人
SIEMENS EDISON SWAN LIMITED
发明人
FLOOD JOHN EDWARD
分类号
H04Q3/42
主分类号
H04Q3/42
代理机构
代理人
主权项
地址
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