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发明名称
Improvements in and relating to electrical signal distributing systems
摘要
申请公布号
GB335417(A)
申请公布日期
1930.09.25
申请号
GB19290032461
申请日期
1929.10.25
申请人
ALBERT WARWICK;JAMES ARTHUR ATKINSON TAYLOR;HAROLD CARTER HOLMES
发明人
分类号
H04H20/77
主分类号
H04H20/77
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代理人
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