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发明名称
Acoustic meter
摘要
申请公布号
GB642909(A)
申请公布日期
1950.09.13
申请号
GB19470015070
申请日期
1948.06.07
申请人
DATTATRAY HARI MARATHE
发明人
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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