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发明名称
Wind instrument
摘要
申请公布号
US2056504(A)
申请公布日期
1936.10.06
申请号
US19350017980
申请日期
1935.04.24
申请人
FRIEDRICH CONRADT
发明人
CONRADT FRIEDRICH
分类号
G10D7/00;G10D9/04
主分类号
G10D7/00
代理机构
代理人
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地址
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