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发明名称
Ratchrt-driven odometer mechanism
摘要
申请公布号
US1798941(A)
申请公布日期
1931.03.31
申请号
US19280251145
申请日期
1928.02.01
申请人
A C SPARK PLUG COMPANY
发明人
HELGEBY RALPH OLAF
分类号
G01P1/04
主分类号
G01P1/04
代理机构
代理人
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地址
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