发明名称 Toy gyroscope has channel inside main body which is coaxial with main axis and contains freely-moving weight
摘要 <p>The gyroscope has a channel (4) inside the main body (1), coaxial with the main axis (10). This contains a weight (5) which is free to move.</p>
申请公布号 DE202004011750(U1) 申请公布日期 2004.09.30
申请号 DE20042011750U 申请日期 2004.07.27
申请人 HALDER, CLAUDIA 发明人
分类号 A63H1/18;A63H1/20;(IPC1-7):A63H1/00 主分类号 A63H1/18
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