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发明名称
Musical whistle
摘要
申请公布号
US2823570(A)
申请公布日期
1958.02.18
申请号
US19550537163
申请日期
1955.09.28
申请人
BACON JOHN H
发明人
BACON JOHN H.
分类号
G10D9/04
主分类号
G10D9/04
代理机构
代理人
主权项
地址
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