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发明名称
WATER ROCKET HAVING A SHOCK-ABSORBING HEAD
摘要
申请公布号
KR200190799(Y1)
申请公布日期
2000.09.01
申请号
KR19980010837U
申请日期
1998.06.22
申请人
YEUN, YU- HYUNG
发明人
YEUN, YU- HYUNG
分类号
G09B9/52;(IPC1-7):G09B9/52
主分类号
G09B9/52
代理机构
代理人
主权项
地址
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