发明名称 SWIMMING POOL WATER CLARIFIER
摘要 For use for clarifying the water in a swimming pool; an improved filter characterized by the absence of any replaceable particulate type filter media includes a fibrous porous filter member and a rigid, fibrous, porous support member.
申请公布号 US3631987(A) 申请公布日期 1972.01.04
申请号 USD3631987 申请日期 1969.10.24
申请人 PETER A. CATTANO SR. 发明人 PETER A. CATTANO SR.
分类号 B01D29/23;(IPC1-7):B01D35/00 主分类号 B01D29/23
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