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发明名称
Apparatus for continuously and instantly measuring efficiency
摘要
申请公布号
US2529615(A)
申请公布日期
1950.11.14
申请号
US19470752855
申请日期
1947.06.05
申请人
KRAFFT JOSEPH M
发明人
KRAFFT JOSEPH M.
分类号
G01F9/00
主分类号
G01F9/00
代理机构
代理人
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地址
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