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发明名称
VORSATZ FUER BRILLEN, INSBESONDERE KORREKTIONSBRILLEN.
摘要
申请公布号
DE1621848(U)
申请公布日期
1951.04.05
申请号
DE195000B2434U
申请日期
1950.07.03
申请人
ERICH BERGNER
发明人
ERICH BERGNER
分类号
主分类号
代理机构
代理人
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