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发明名称
Roller structure
摘要
申请公布号
US2670242(A)
申请公布日期
1954.02.23
申请号
US19480036093
申请日期
1948.06.30
申请人
CHICAGO ROLLER SKATE COMPANY
发明人
BECKMAN EDWARD MANFRID
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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