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发明名称
BRILLENOHRBUEGEL.
摘要
申请公布号
DE1704436(U)
申请公布日期
1955.08.11
申请号
DE19521704436U
申请日期
1952.03.17
申请人
FRITZ KROSCHEL
发明人
FRITZ KROSCHEL
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主分类号
代理机构
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