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发明名称
Perfectionnements relatifs à des éléments optiques en matière plastique, et procédé de moulage de ces éléments
摘要
申请公布号
FR921365(A)
申请公布日期
1947.05.06
申请号
FRD921365
申请日期
1946.02.07
申请人
INTERNATIONAL POLAROID CORPORATION
发明人
分类号
G01C3/16
主分类号
G01C3/16
代理机构
代理人
主权项
地址
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