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公开(公告)号：US3084406A
公开(公告)日：1963-04-09
申请号：US8141461
申请日：1961-01-09
Applicant: KING
Inventor： KING JR ANDREW J , FAIN ARTHUR B
IPC: E04F15/04
CPC classification number: E04F15/04 , E04F2201/01 , E04F2201/0517
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