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公开(公告)号：US2191614A
公开(公告)日：1940-02-27
申请号：US10946636
申请日：1936-11-06
Applicant: GEN MOTORS CORP
Inventor： FRANTZ RALPH S
IPC: F01P11/02
CPC classification number: F01P11/0238 , Y10T137/7777
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