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发明名称
Gas-density meter
摘要
申请公布号
US2123038(A)
申请公布日期
1938.07.05
申请号
US19360110175
申请日期
1936.11.10
申请人
GENERAL ELECTRIC COMPANY
发明人
DALLMANN HERBERT
分类号
G01N9/34
主分类号
G01N9/34
代理机构
代理人
主权项
地址
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