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发明名称
Selbsttaetiges Lesezeichen
摘要
申请公布号
DE617719(C)
申请公布日期
1935.08.24
申请号
DENDATF076312D
申请日期
申请人
WALTER FRONHAUS
发明人
分类号
B42D3/14
主分类号
B42D3/14
代理机构
代理人
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