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经营范围
发明名称
Speedometer
摘要
申请公布号
US1760844(A)
申请公布日期
1930.05.27
申请号
US19280287629
申请日期
1928.06.22
申请人
A C SPARK PLUG COMPANY
发明人
HELGEBY RALPH O.
分类号
G01P3/495
主分类号
G01P3/495
代理机构
代理人
主权项
地址
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