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经营范围
发明名称
Boiler return trap
摘要
申请公布号
US2043073(A)
申请公布日期
1936.06.02
申请号
US19320624172
申请日期
1932.07.23
申请人
HOFFMAN SPECIALTY COMPANY
发明人
SIMPSON WILLIAM K.
分类号
F22D11/06
主分类号
F22D11/06
代理机构
代理人
主权项
地址
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