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发明名称
Totaling device
摘要
申请公布号
US1883765(A)
申请公布日期
1932.10.18
申请号
US19300464501
申请日期
1930.06.28
申请人
THE SERVICE RECORDER COMPANY
发明人
COOL HENRY R.
分类号
主分类号
代理机构
代理人
主权项
地址
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