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经营范围
发明名称
Water aerator
摘要
申请公布号
US2675218(A)
申请公布日期
1954.04.13
申请号
US19500145856
申请日期
1950.02.23
申请人
RALPH E. BLETCHER;ERNEST H. BUCKNELL;MABEL BUCKNELL;PEARL WHITE BLETCHER;MARCIA BUCKNELL LISTON;JAMES H. BLETCHER;HAZEL BLETCHER SKINNER;CHARLOTTE R. B. ROBERTSON
发明人
BLETCHER RALPH E.;WARD IRVING A.
分类号
E03C1/084
主分类号
E03C1/084
代理机构
代理人
主权项
地址
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