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发明名称
Improvements relating to prepayment meters
摘要
申请公布号
GB396766(A)
申请公布日期
1933.08.08
申请号
GB19320003460
申请日期
1932.02.05
申请人
PARKINSON & COWAN (GAS METERS) LIMITED;EDMUND DOUGLAS WEIPPERT;ALFRED WILLIAM UNDERHILL
发明人
分类号
G07F15/02
主分类号
G07F15/02
代理机构
代理人
主权项
地址
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