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发明名称
Ball throwing machine having two rotatable discs with converging and diverging interstices
摘要
申请公布号
US3399660(A)
申请公布日期
1968.09.03
申请号
US19650503100
申请日期
1965.10.23
申请人
EDWARD SWARTOUT
发明人
SWARTOUT EDWARD
分类号
A63B69/40
主分类号
A63B69/40
代理机构
代理人
主权项
地址
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