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发明名称
Brillenbuegel
摘要
申请公布号
DE671424(C)
申请公布日期
1939.02.07
申请号
DE1936H146705D
申请日期
1936.02.23
申请人
PAUL HEMPEL
发明人
分类号
G02C5/16;G02C5/22
主分类号
G02C5/16
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