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经营范围
发明名称
Sound-wave generator
摘要
申请公布号
US2152177(A)
申请公布日期
1939.03.28
申请号
US19370139254
申请日期
1937.04.27
申请人
EISENBEIS WILLIAM J;WILLIAMSON CHARLES O
发明人
EISENBEIS WILLIAM J.;WILLIAMSON CHARLES O.
分类号
G10H3/20
主分类号
G10H3/20
代理机构
代理人
主权项
地址
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