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发明名称
Indicator and recorder
摘要
申请公布号
US1754503(A)
申请公布日期
1930.04.15
申请号
US19270226715
申请日期
1927.10.17
申请人
JOHN T. DEAVER;JAMES LAWLOR;C. C. CUNNINGHAM
发明人
DWELLE WALTER K.
分类号
G07C3/12
主分类号
G07C3/12
代理机构
代理人
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地址
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