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发明名称
Improvements in or relating to optical instruments of variable magnification
摘要
申请公布号
GB470810(A)
申请公布日期
1937.08.23
申请号
GB19370005876
申请日期
1937.02.26
申请人
SOCIETE GENERALE D'OPTIQUE SOCIETE ANONYME DES ANCIENS ETABLISSEMENTS HUET & CIE. ET JUMELLES FLAMMARION
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