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经营范围
发明名称
Improvements in or relating to Electrical Variable Loss Networks
摘要
申请公布号
GB1184934(A)
申请公布日期
1970.03.18
申请号
GB19680042347
申请日期
1967.09.18
申请人
TELEPHONE MANUFACTURING COMPANY LIMITED
发明人
JOHN SIDNEY TARRANT
分类号
H03G1/00
主分类号
H03G1/00
代理机构
代理人
主权项
地址
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