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发明名称
Flapping wing toy
摘要
申请公布号
US2637939(A)
申请公布日期
1953.05.12
申请号
US19490100810
申请日期
1949.06.23
申请人
EUGENE POLK WILLIAM
发明人
POLK WILLIAM EUGENE
分类号
A63H7/00
主分类号
A63H7/00
代理机构
代理人
主权项
地址
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