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发明名称
Improvements in or relating to the control of automatic selector switches for telephone or other remotely controlled systems
摘要
申请公布号
GB359542(A)
申请公布日期
1931.10.26
申请号
GB19300022324
申请日期
1930.07.24
申请人
WILLIAM HATTON
发明人
分类号
H04Q3/42
主分类号
H04Q3/42
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代理人
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