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经营范围
发明名称
BALL WHIRLING DEVICE
摘要
申请公布号
US3455552(A)
申请公布日期
1969.07.15
申请号
USD3455552
申请日期
1965.08.27
申请人
MARVIN E. SHERWOOD
发明人
MARVIN E. SHERWOOD
分类号
A63B69/00;(IPC1-7):A63B69/00
主分类号
A63B69/00
代理机构
代理人
主权项
地址
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