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发明名称
Roundabout
摘要
申请公布号
US1800836(A)
申请公布日期
1931.04.14
申请号
US19290330949
申请日期
1929.01.07
申请人
KEDDY CLIFFORD L
发明人
KEDDY CLIFFORD L.
分类号
A63G3/00
主分类号
A63G3/00
代理机构
代理人
主权项
地址
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