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发明名称
Perfectionnements aux systèmes électro-optiques
摘要
申请公布号
FR710115(A)
申请公布日期
1931.08.19
申请号
FRD710115
申请日期
1931.01.29
申请人
ELECTRICAL RESEARICH PRODUCTS INC.
发明人
分类号
H04N9/00;H04N11/00
主分类号
H04N9/00
代理机构
代理人
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