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发明名称
Schriftumwandler-Projektionsschirm
摘要
申请公布号
DE1946604(A1)
申请公布日期
1971.03.25
申请号
DE19691946604
申请日期
1969.09.15
申请人
SCHAEFER,GUENTHER
发明人
SCHAEFER,GUENTHER
分类号
G09C5/00;H04N1/44
主分类号
G09C5/00
代理机构
代理人
主权项
地址
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