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发明名称
Perfectionnements aux sextants périscopiques et autres instruments
摘要
申请公布号
FR996332(A)
申请公布日期
1951.12.18
申请号
FRD996332
申请日期
1949.09.28
申请人
HENRY HUGHES & SON LIMITED
发明人
分类号
G02B23/08
主分类号
G02B23/08
代理机构
代理人
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