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公开(公告)号：US2413788A
公开(公告)日：1947-01-07
申请号：US44257242
申请日：1942-05-11
Applicant: GEN MOTORS CORP
Inventor： SARGEANT WALTER E , BENNER HOEPER HERMAN
IPC: H03F3/40
CPC classification number: H03F3/40
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