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经营范围
发明名称
Electric hygrometer
摘要
申请公布号
US2177630(A)
申请公布日期
1939.10.31
申请号
US19360110131
申请日期
1936.11.10
申请人
FRANK E. WOOD
发明人
ALDER WILLIAM F.
分类号
G01N25/62
主分类号
G01N25/62
代理机构
代理人
主权项
地址
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