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发明名称
Baseball scorekeeping device
摘要
申请公布号
US2481709(A)
申请公布日期
1949.09.13
申请号
US19470743845
申请日期
1947.04.25
申请人
T. A. HARDIN;JOHN A. HALL;GROVER C. PAGE;JAS. A. PARKER
发明人
ADAMS WILLIAM C.
分类号
A63B71/06
主分类号
A63B71/06
代理机构
代理人
主权项
地址
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