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发明名称
Improvements relating to pre-payment gas meters
摘要
申请公布号
GB569372(A)
申请公布日期
1945.05.22
申请号
GB19430004943
申请日期
1943.03.26
申请人
METROPOLITAN GAS METERS LIMITED;JOHN GEORGE SPARKES;LOUIS NAPOLEON NEWTON
发明人
分类号
G07F15/04
主分类号
G07F15/04
代理机构
代理人
主权项
地址
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