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发明名称
Stock indicator
摘要
申请公布号
US1862619(A)
申请公布日期
1932.06.14
申请号
US19260097810
申请日期
1926.03.26
申请人
FREYN ENGINEERING COMPANY
发明人
FOX GORDON
分类号
G01F23/00
主分类号
G01F23/00
代理机构
代理人
主权项
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