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发明名称
Ammeter
摘要
申请公布号
US1761917(A)
申请公布日期
1930.06.03
申请号
US19280281098
申请日期
1928.05.28
申请人
A C SPARK PLUG COMPANY
发明人
HELGEBY RALPH O.
分类号
G01R11/02
主分类号
G01R11/02
代理机构
代理人
主权项
地址
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