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经营范围
发明名称
Roundabout seesaw
摘要
申请公布号
US2564146(A)
申请公布日期
1951.08.14
申请号
US19470738024
申请日期
1947.03.29
申请人
BOUCHARD ARTHUR J;BOUCHARD EDWARD B
发明人
BOUCHARD ARTHUR J.;BOUCHARD EDWARD B.
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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