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公开(公告)号：US3184589A
公开(公告)日：1965-05-18
申请号：US27141963
申请日：1963-04-08
Applicant: GIBBENS ALFRED L
Inventor： GIBBENS ALFRED L
CPC classification number: F21V19/02 , F21L2/00 , G03B15/05 , G03B2215/056
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