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公开(公告)号：US3506153A
公开(公告)日：1970-04-14
申请号：US3506153D
申请日：1968-08-26
Applicant: REYNOLDS METALS CO
Inventor： HATCH DAVID E , SWENCK GEORGE F
CPC classification number: F21V17/12 , F21V17/107 , Y10T16/53625
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