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公开(公告)号：US3446004A
公开(公告)日：1969-05-27
申请号：US3446004D
申请日：1967-10-13
Applicant: SACKNER PROD INC
Inventor： WILTERINK DALE P
CPC classification number: D07B5/02 , D07B2201/209 , D07B2401/205
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