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经营范围
发明名称
Mobile training device for skaters
摘要
申请公布号
US3235254(A)
申请公布日期
1966.02.15
申请号
US19630259032
申请日期
1963.02.14
申请人
ROBSON JOHN H
发明人
ROBSON JOHN H.
分类号
A63B69/00
主分类号
A63B69/00
代理机构
代理人
主权项
地址
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