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发明名称
Boiler tube cleaner
摘要
申请公布号
US1874452(A)
申请公布日期
1932.08.30
申请号
US19280308300
申请日期
1928.09.25
申请人
COLE FRANK H
发明人
COLE FRANK H.
分类号
F28G3/16
主分类号
F28G3/16
代理机构
代理人
主权项
地址
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