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发明名称
ELECTRICAL MEASURING INSTRUMENT
摘要
申请公布号
CA438252(A)
申请公布日期
1946.11.26
申请号
CAD438252
申请日期
申请人
ROTOL LIMITED
发明人
ALFRED GEORGE MAPP
分类号
主分类号
代理机构
代理人
主权项
地址
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