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发明名称
Instrument for reciprocity calibration of electroacoustic transducers
摘要
申请公布号
US3054864(A)
申请公布日期
1962.09.18
申请号
US19600072803
申请日期
1960.11.30
申请人
WALTER KOIDAN
发明人
KOIDAN WALTER
分类号
H04R29/00
主分类号
H04R29/00
代理机构
代理人
主权项
地址
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