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公开(公告)号：US1791991A
公开(公告)日：1931-02-10
申请号：US36381829
申请日：1929-05-17
Applicant: PACKARD MOTOR CAR CO , UNION GUARDIAN TRUST COMPANY
Inventor： ADOLPH WIDMANN , WOOLSON LIONEL M
IPC: F02B23/00
CPC classification number: F02B23/00 , F02B2720/258 , Y02T10/125
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