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发明名称
Improvements in or relating to methods of manufacturing optical elements
摘要
申请公布号
GB679426(A)
申请公布日期
1952.09.17
申请号
GB19500023102
申请日期
1950.09.20
申请人
PHILIPS ELECTRICAL INDUSTRIES LIMITED
发明人
分类号
B29D11/00
主分类号
B29D11/00
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代理人
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