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公开(公告)号：US3397728A
公开(公告)日：1968-08-20
申请号：US57353966
申请日：1966-08-19
Applicant: EDWARD R. MCCRARY , ROBERT L. QUINLIVAN
Inventor： MCCRARY EDWARD R , QUINLIVAN ROBERT L
CPC classification number: B60B11/10 , B60C17/04 , B60C17/041 , B60C17/042 , Y10T152/1036 , Y10T152/10396
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