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发明名称
Improvements in or relating to automatic ticketing equipment for telecommunication exchange systems
摘要
申请公布号
GB519041(A)
申请公布日期
1940.03.14
申请号
GB19380026704
申请日期
1938.09.13
申请人
MARTINUS DEN HERTOG;LESLIE BAINES HAIGH
发明人
分类号
H04M15/38
主分类号
H04M15/38
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