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发明名称
AEROPLANE COMPASS
摘要
申请公布号
CA392940(A)
申请公布日期
1940.12.03
申请号
CAD392940
申请日期
申请人
SQUARE D. COMPANY;KOLLSMAN INSTRUMENT COMPANY
发明人
PAUL KOLLSMAN
分类号
主分类号
代理机构
代理人
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