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发明名称
Meter calibrating apparatus
摘要
申请公布号
US1838960(A)
申请公布日期
1931.12.29
申请号
US19290388185
申请日期
1929.08.24
申请人
LANDIS & GYR, A.-G.
发明人
PETER ADOLF
分类号
G01R1/20
主分类号
G01R1/20
代理机构
代理人
主权项
地址
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