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发明名称
SCHUTZUEBERZUG FUER TELEFONHOERER.
摘要
申请公布号
DE1883446(U)
申请公布日期
1963.11.28
申请号
DE196300V5532U
申请日期
1963.09.27
申请人
GIOVANNI BATTISTA VISCARDI
发明人
GIOVANNI BATTISTA VISCARDI
分类号
主分类号
代理机构
代理人
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