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发明名称
Procédé et appareil pour la résolution des problèmes de géométrie descriptive et notamment des problèmes concernant la navigation maritime ou aérienne
摘要
申请公布号
FR719348(A)
申请公布日期
1932.02.04
申请号
FRD719348
申请日期
1931.05.08
申请人
发明人
L'HEUREUX GUSTAVE-PIERRE-VICTO
分类号
G01C21/02
主分类号
G01C21/02
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