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发明名称
Perfectionnements aux radio-compas du type à rayons cathodiques
摘要
申请公布号
FR829899(A)
申请公布日期
1938.07.08
申请号
FRD829899
申请日期
1937.11.25
申请人
发明人
JEFFCOCK JOHN PARKYN
分类号
G01S1/02
主分类号
G01S1/02
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