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发明名称
RETURNING FLYING RING TOY AND IMPROVED AIRFOIL
摘要
A returning flying ring toy (10) of modified triangular-ring planform and an improved airfoil comprising an abrupt transition (49) on the upper surface (15 - 46, 48), near the trailing edge (33).
申请公布号
WO9100757(A1)
申请公布日期
1991.01.24
申请号
WO1990US03622
申请日期
1990.06.27
申请人
ADLER, ALAN, J.
发明人
ADLER, ALAN, J.
分类号
A63B65/08;A63H33/18
主分类号
A63B65/08
代理机构
代理人
主权项
地址
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