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经营范围
发明名称
Stock indicator
摘要
申请公布号
US1959025(A)
申请公布日期
1934.05.15
申请号
US19270240917
申请日期
1927.12.17
申请人
FREYN ENGINEERING COMPANY
发明人
FOX GORDON;WHITCOMB ARTHUR J.
分类号
C21B7/24;G01F23/00
主分类号
C21B7/24
代理机构
代理人
主权项
地址
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