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发明名称
Perfectionnements aux appareils optiques de projection
摘要
申请公布号
FR1027989(A)
申请公布日期
1953.05.18
申请号
FRD1027989
申请日期
1950.07.24
申请人
COMPAGNIE DES FREINS ET SIGNAUX WESTINGHOUSE
发明人
分类号
B61L5/18
主分类号
B61L5/18
代理机构
代理人
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