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发明名称
Scoring system
摘要
申请公布号
US2938201(A)
申请公布日期
1960.05.24
申请号
US19560610140
申请日期
1956.09.17
申请人
DEL ? ENGINEERING LABORATORIES
发明人
?
分类号
F41G3/14;G03B15/16;G03B17/24
主分类号
F41G3/14
代理机构
代理人
主权项
地址
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