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发明名称
ELECTRIC SIGNAL CHANNEL SWITCHING ARRANGEMENTS
摘要
申请公布号
CA720177(A)
申请公布日期
1965.10.19
申请号
CAD720177
申请日期
申请人
MINISTER OF SUPPLY IN HIS MAJESTY'S GOVERNMENT OFTHE UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
发明人
JOHN D. CLARE
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主分类号
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