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发明名称
Sound analyzing device
摘要
申请公布号
US1830237(A)
申请公布日期
1931.11.03
申请号
US19290348637
申请日期
1929.03.20
申请人
MORSE FRANK L
发明人
MORSE FRANK L.
分类号
G01H3/00
主分类号
G01H3/00
代理机构
代理人
主权项
地址
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