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发明名称
SCHREIBPROJEKTOR
摘要
申请公布号
DE7008306(U)
申请公布日期
1970.07.16
申请号
DE19700008306U
申请日期
1970.03.03
申请人
RITZERFELD G
发明人
分类号
G03B21/132
主分类号
G03B21/132
代理机构
代理人
主权项
地址
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