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公开(公告)号：US2018143A
公开(公告)日：1935-10-22
申请号：US62780732
申请日：1932-08-06
Applicant: GEN MOTORS CORP
Inventor： MCCARTY JOHN E , RANDOLPH DONALD W
IPC: C22C1/02
CPC classification number: C22C1/026
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