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经营范围
发明名称
Zweiweg-Verstärkeranlage für Fernmeldeanlagen.
摘要
申请公布号
CH228775(A)
申请公布日期
1943.09.15
申请号
CHD228775
申请日期
1940.06.01
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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