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发明名称
Improvements relating to spectacle sidepieces
摘要
申请公布号
GB759995(A)
申请公布日期
1956.10.24
申请号
GB19540034957
申请日期
1954.12.02
申请人
ERNST CHRISTIAN SCHNEIDER;LORE BRAUN;MARIANNE SCHNEIDER
发明人
分类号
G02C5/16;G02C5/20
主分类号
G02C5/16
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代理人
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