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公开(公告)号：US1688751A
公开(公告)日：1928-10-23
申请号：US26685928
申请日：1928-04-02
Applicant: CHARLES A KADING
Inventor： SCHNITGER EMIL R
CPC classification number: B01D35/28 , Y10T24/44291 , Y10T24/44325
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