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发明名称
FILTER UNIT WITH ANTI-DRAIN BACK VALVE MEANS
摘要
申请公布号
CA809996(A)
申请公布日期
1969.04.08
申请号
CAD809996
申请日期
申请人
CHAMPION LABORATORIES
发明人
ROBERT MACGREGOR;WILLIAM H. HULTGREN
分类号
主分类号
代理机构
代理人
主权项
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