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发明名称
ENGRAVING DIAMOND FOR OPTICAL SURFACES
摘要
申请公布号
CA459500(A)
申请公布日期
1949.09.06
申请号
CAD459500
申请日期
申请人
LA RELIEPHOGRAPHIE, SOCIETE POUR L'EXPLOITATION DES PROCEDES DE PHOTOGRA PHIE EN RELIEF MAURICE BONNET
发明人
MAURICE BONNET
分类号
主分类号
代理机构
代理人
主权项
地址
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