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经营范围
发明名称
Speed indicating apparatus
摘要
申请公布号
US2284850(A)
申请公布日期
1942.06.02
申请号
US19390268800
申请日期
1939.04.19
申请人
HAMMOND V. HAYES
发明人
SMITH PHILIP N.
分类号
G01P3/68
主分类号
G01P3/68
代理机构
代理人
主权项
地址
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