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经营范围
发明名称
Brillenbuegel
摘要
申请公布号
DE684189(C)
申请公布日期
1939.11.23
申请号
DE1935H144326D
申请日期
1935.07.14
申请人
PAUL HEMPEL
发明人
分类号
G02C5/16;G02C5/20
主分类号
G02C5/16
代理机构
代理人
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