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发明名称
Wechselrahmen für Diapositive
摘要
申请公布号
AT274424(B)
申请公布日期
1969.09.25
申请号
AT19670001276
申请日期
1967.02.10
申请人
HANS-JUERGEN PHILIPP
发明人
分类号
G03B21/64
主分类号
G03B21/64
代理机构
代理人
主权项
地址
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