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经营范围
发明名称
écran de projection ou rideau constitué par un aérosol, dispositif pour obtenir cet écran et procédé de projection d'images aériennes
摘要
申请公布号
FR1075481(A)
申请公布日期
1954.10.18
申请号
FRD1075481
申请日期
1953.03.04
申请人
发明人
ROBERT-HOUDIN PAUL;LAUBAREDE LEONCE-MARIE-HENRI KRAFFE DE
分类号
G03B21/60
主分类号
G03B21/60
代理机构
代理人
主权项
地址
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