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公开(公告)号：US3397488A
公开(公告)日：1968-08-20
申请号：US62116267
申请日：1967-03-07
Applicant: CHAMBERLIN MFG CORP
Inventor： RICHARD GOLDSTEIN
IPC: E05F15/16
CPC classification number: E05F15/676 , E05Y2201/434 , E05Y2600/46 , E05Y2900/106
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