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发明名称
Zweiweg-Fernmeldeanlage.
摘要
申请公布号
CH235152(A)
申请公布日期
1944.11.15
申请号
CHD235152
申请日期
1940.05.01
申请人
BELL TELEPHONE MANUFACTURING COMPANY, SOCIETE ANONYME
发明人
BELL TELEPHONE MANUFACTURING COMPANY, SOCIETE ANONYME
分类号
H04B3/20
主分类号
H04B3/20
代理机构
代理人
主权项
地址
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