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公开(公告)号：US3084610A
公开(公告)日：1963-04-09
申请号：US13715861
申请日：1961-09-11
Applicant: GRAND RAPIDS HARDWARE COMPANY
Inventor： GARRISON JUDD F , OWEN JOHN C
IPC: F24F13/072
CPC classification number: F24F13/072
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