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发明名称
Speed recording mechanism
摘要
申请公布号
US1812083(A)
申请公布日期
1931.06.30
申请号
US19280244986
申请日期
1928.01.06
申请人
DAMERELL MARK H
发明人
DAMERELL MARK H.
分类号
G01P1/12
主分类号
G01P1/12
代理机构
代理人
主权项
地址
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