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发明名称
Swinging seesaw
摘要
申请公布号
US2457627(A)
申请公布日期
1948.12.28
申请号
US19440517694
申请日期
1944.01.10
申请人
BAILEY EMMETT C
发明人
BAILEY EMMETT C.
分类号
A63G11/00
主分类号
A63G11/00
代理机构
代理人
主权项
地址
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