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发明名称
GAS METERS
摘要
申请公布号
CA536707(A)
申请公布日期
1957.02.05
申请号
CAD536707
申请日期
申请人
AMERICAN METER COMPANY
发明人
ROBERT R. DOUGLAS
分类号
主分类号
代理机构
代理人
主权项
地址
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