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发明名称
Method of and means for calibrating valves
摘要
申请公布号
US1946756(A)
申请公布日期
1934.02.13
申请号
US19320614891
申请日期
1932.06.02
申请人
BARNES & JONES, INCORPORATED
发明人
OBERG CLIFFORD R.
分类号
G01B5/00
主分类号
G01B5/00
代理机构
代理人
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地址
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