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经营范围
发明名称
Telephone installations in which a number of junction lines are available to a greater number of subscribers for calls to an exchange
摘要
申请公布号
GB637297(A)
申请公布日期
1950.05.17
申请号
GB19460022354
申请日期
1946.07.26
申请人
CHR. GFELLER AKTIENGESELLSCHAFT
发明人
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
主权项
地址
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