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发明名称
Ball bearing skate wheel
摘要
申请公布号
US2022348(A)
申请公布日期
1935.11.26
申请号
US19330700696
申请日期
1933.12.02
申请人
UNION HARDWARE COMPANY
发明人
HOERLE WILLIAM F.
分类号
A63C17/22
主分类号
A63C17/22
代理机构
代理人
主权项
地址
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