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发明名称
Projektionskärm
摘要
申请公布号
FI29869(A)
申请公布日期
1958.08.11
申请号
FID29869
申请日期
申请人
JACOBSON JOHAN SAM
发明人
JACOBSON JOHAN SAM
分类号
G03B21/56;(IPC1-7):G03B21/56
主分类号
G03B21/56
代理机构
代理人
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