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经营范围
发明名称
Efficiency indicator
摘要
申请公布号
US2540192(A)
申请公布日期
1951.02.06
申请号
US19470735357
申请日期
1947.03.18
申请人
ECHOLS JR ANGUS B
发明人
JR. ANGUS B. ECHOLS,
分类号
F23N5/26
主分类号
F23N5/26
代理机构
代理人
主权项
地址
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