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经营范围
发明名称
Improvements in gas meters
摘要
申请公布号
GB683021(A)
申请公布日期
1952.11.19
申请号
GB19470033281
申请日期
1947.12.17
申请人
ROBERT NEWTON
发明人
分类号
G01F15/00
主分类号
G01F15/00
代理机构
代理人
主权项
地址
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