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发明名称
Apparatus for measuring and indicating efficiencies
摘要
申请公布号
US1754039(A)
申请公布日期
1930.04.08
申请号
US19280279807
申请日期
1928.05.22
申请人
PAWLICK OTTO A;GIESE RAYMOND C
发明人
PAWLICK OTTO A.;GIESE RAYMOND C.
分类号
G01P3/44
主分类号
G01P3/44
代理机构
代理人
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地址
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