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公开(公告)号：US2164472A
公开(公告)日：1939-07-04
申请号：US10671836
申请日：1936-10-21
Applicant: GEN MOTORS CORP
Inventor： RANDOLPH DONALD W , MITCHEL RALPH H
IPC: F02P1/08
CPC classification number: F02P1/086
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