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发明名称
WIRELESS SIGNALLING ARRANGEMENTS
摘要
申请公布号
CA488233(A)
申请公布日期
1952.11.18
申请号
CAD488233
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
ROBERT JAMES DIPPY
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主分类号
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