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发明名称
摘要
申请公布号
FR2158551(A1)
申请公布日期
1973.06.15
申请号
FR19720039154
申请日期
1972.11.06
申请人
PHILIPS GLOEILAMPEN
发明人
分类号
G02B7/18;G02F1/31;(IPC1-7):G02B7/00;G02F1/00
主分类号
G02B7/18
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