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经营范围
发明名称
Roller skate
摘要
申请公布号
US1761807(A)
申请公布日期
1930.06.03
申请号
US19280321572
申请日期
1928.11.24
申请人
ETTEN WILLIAM V VAN
发明人
ETTEN WILLIAM V. VAN
分类号
B62K9/00
主分类号
B62K9/00
代理机构
代理人
主权项
地址
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