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公开(公告)号：US2846241A
公开(公告)日：1958-08-05
申请号：US37603253
申请日：1953-08-24
Applicant: GEN MOTORS CORP
Inventor： MCDONNELL JOSEPH M , WRIGHT GALER N
CPC classification number: B21D39/044 , B21C37/296 , F16B7/00 , F16L41/084 , Y10T403/46 , Y10T403/479 , Y10T403/4966
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