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发明名称
Water column for steam boilers
摘要
申请公布号
US1940376(A)
申请公布日期
1933.12.19
申请号
US19300505101
申请日期
1930.12.27
申请人
STETSON GEORGE W
发明人
STETSON GEORGE W.
分类号
F22B37/42;G01F23/64
主分类号
F22B37/42
代理机构
代理人
主权项
地址
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