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经营范围
发明名称
Boiler water feed
摘要
申请公布号
US2056973(A)
申请公布日期
1936.10.13
申请号
US19340748171
申请日期
1934.10.13
申请人
DAN MCDONALD
发明人
MCDONALD DAN
分类号
F22D5/00
主分类号
F22D5/00
代理机构
代理人
主权项
地址
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