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经营范围
发明名称
Device for ventilating toilet bowls
摘要
申请公布号
US3277499(A)
申请公布日期
1966.10.11
申请号
US19630317981
申请日期
1963.10.22
申请人
PURE-O-VAC, INC.
发明人
KEEFAUVER GEORGE L.
分类号
E03D9/052
主分类号
E03D9/052
代理机构
代理人
主权项
地址
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