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经营范围
发明名称
Impulstelegraphenanlage.
摘要
申请公布号
CH226794(A)
申请公布日期
1943.04.30
申请号
CHD226794
申请日期
1941.08.01
申请人
BELL TELEPHONE MANUFACTURING COMPANY, SOCIETE ANONYME
发明人
BELL TELEPHONE MANUFACTURING COMPANY, SOCIETE ANONYME
分类号
H04L25/22;H04L25/49
主分类号
H04L25/22
代理机构
代理人
主权项
地址
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