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发明名称
Perfectionnements aux signaleurs
摘要
申请公布号
FR1138169(A)
申请公布日期
1957.06.11
申请号
FRD1138169
申请日期
1955.12.21
申请人
INTERNATIONAL STANDARD ELECTRIC CORPORATION
发明人
JR. ARTHUR JULIUS RADCLIFFE;DENZ ARTHUR ROBERT
分类号
H04Q1/446
主分类号
H04Q1/446
代理机构
代理人
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地址
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