发明名称 Spinning top toy
摘要 A spinning top toy having minimal size and weight which when used in combination with a familiar commonplace coin exhibits significantly improved spinning and balancing properties. The toy can also be spun on its edge so that it can be raced across a flat surface.
申请公布号 US4960401(A) 申请公布日期 1990.10.02
申请号 US19890450563 申请日期 1989.12.14
申请人 ROSS, BRUCE 发明人 ROSS, BRUCE
分类号 A63H1/00 主分类号 A63H1/00
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