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发明名称
Belysningsskærm af uigennemsigtigt Materiale.
摘要
申请公布号
DK61401(C)
申请公布日期
1943.10.11
申请号
DKD61401
申请日期
1941.12.15
申请人
KNUD POULSEN
发明人
KNUD POULSEN
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主分类号
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