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发明名称
Game counter
摘要
申请公布号
US2253563(A)
申请公布日期
1941.08.26
申请号
US19390270086
申请日期
1939.04.26
申请人
THOMAS HADDEN HUMPHREYS
发明人
HUMPHREYS FRANCIS A.
分类号
A63F1/18
主分类号
A63F1/18
代理机构
代理人
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