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经营范围
发明名称
Improvements relating to the measurement of noise intensity in terms of damage risk to human hearing
摘要
申请公布号
GB906305(A)
申请公布日期
1962.09.19
申请号
GB19600001297
申请日期
1960.01.13
申请人
MINE SAFETY APPLIANCES COMPANY
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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