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公开(公告)号：US3223619A
公开(公告)日：1965-12-14
申请号：US17484762
申请日：1962-02-21
Applicant: PFAUDLER PERMUTIT INC
Inventor： CALVIN CALMON , GILWOOD MARTIN E , TERMINI JOHN P
CPC classification number: C02F1/002 , C02F2101/006 , G21F9/12
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