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发明名称
Improvements relating to indicating and recording apparatus
摘要
申请公布号
GB621752(A)
申请公布日期
1949.04.19
申请号
GB19460020505
申请日期
1946.07.09
申请人
GRAHAM JOHN SCOLES;METROPOLITAN - VICKERS ELECTRICAL COMPANY LIMITED
发明人
分类号
G08C15/08
主分类号
G08C15/08
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代理人
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