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发明名称
Wheel
摘要
申请公布号
US1750478(A)
申请公布日期
1930.03.11
申请号
US19270168027
申请日期
1927.02.14
申请人
ROBERTSON KOEHLER CONRAD
发明人
KOEHLER CONRAD ROBERTSON
分类号
B60B9/20
主分类号
B60B9/20
代理机构
代理人
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