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发明名称
GERAET ZUM BETRACHTEN, ORDNEN UND AUFBEWAHREN VON DIAPOSITIVEN.
摘要
申请公布号
DE1930210(U)
申请公布日期
1965.12.30
申请号
DE196500H3502U
申请日期
1965.10.22
申请人
EMIL HUB
发明人
EMIL HUB
分类号
主分类号
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