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公开(公告)号：US2939305A
公开(公告)日：1960-06-07
申请号：US62640156
申请日：1956-12-05
Applicant: GEN MOTORS CORP
Inventor： SNYDER HAROLD M , NEIDHART ROBERT F
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公开(公告)号：CA658770A
公开(公告)日：1963-03-05
申请号：CA658770D
Applicant: GEN MOTORS CORP
Inventor： SNYDER HAROLD M , NEIDHART ROBERT F
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