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经营范围
发明名称
Improvement in hygrometric instruments
摘要
申请公布号
GB634285(A)
申请公布日期
1950.03.15
申请号
GB19480007832
申请日期
1948.03.16
申请人
FREDERICK CHARLES STEWART
发明人
分类号
G01N19/10
主分类号
G01N19/10
代理机构
代理人
主权项
地址
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