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经营范围
发明名称
See-saw swing
摘要
申请公布号
US1941824(A)
申请公布日期
1934.01.02
申请号
US19310564322
申请日期
1931.09.22
申请人
WILLIAM BOOTH
发明人
BOOTH WILLIAM
分类号
A63G9/00
主分类号
A63G9/00
代理机构
代理人
主权项
地址
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