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经营范围
发明名称
Self-proportioning fluid feeding apparatus
摘要
申请公布号
US2670002(A)
申请公布日期
1954.02.23
申请号
US19490107841
申请日期
1949.08.01
申请人
BELL DAVID B
发明人
BELL DAVID B.
分类号
G05D11/00
主分类号
G05D11/00
代理机构
代理人
主权项
地址
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